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TheEssence
of LearningTrigonomet
ryin our
Society
Math II UBD
Kar l E lv i s Esp inosa
K imber ly Cas ipeChar lean Lou ChuaJeany De l Rosar io
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UNDERSTANDING CONCETS
Right Triangle Based Defnitiono Trigonometric unctions
!ythagorean Theorem
"ngle o Elevation
"ngle o Depression
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RIG!T TRIANGLE "
BASED DE#INITION O#TRIGONOMETRIC#UNCTIONS
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Right Triangle # " triangle that has one
angle that measures $% degrees
&ypotenuse ' the longest side o the righttriangle(
"d)acent side 'the side beside the anglegiven* note that hypotenuse +ill never be
the ad)acent side o the triangle(
,pposite side ' it is the side o thetriangle that is opposite to the anglegiven(
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-ine ' used to fnd an angle that has a
given value or its opposite side andhypotenuse(
Cosine ' used to fnd an angle +ith agiven value or its ad)acent side andhypotenuse in a right triangle(
Tangent ' used to fnd an angle +ith agiven value or its opposite side andad)acent side(
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Cosecant ' it is the opposite o a sine(
.sually defned as one/ 0over1 sine theta(
-ecant ' it is the opposite o cosine(
.sually defned as one/ 0over1 cosinetheta(
Cotangent ' the opposite o tangent+hich is defned as one/ 0over1 tangenttheta(
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T!E $T!AGOREAN T!EOREM
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amous theorem named ater the 2ree3mathematician and philosopher4 $T!AGORAS(
"The area of the square built upon thehypotenuse of a right triangle is equal tothe sum of the areas of the squares upon
the remaining sides.
c5 6 a57 b5
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Ang%e ofE%e&ation
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The angle bet+een the
imaginary line o sight and ahori8ontal line4 +here theob)ect is above the observer(
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Ang%e ofDe'ression
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The angle o depression isthe angle bet+een the
imaginary line o sight and ahori8ontal line4 +here theob)ect is belo+ the observer(
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Structures
an(Scenarios
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Lan(mar)
* anaa(Sta(ium The stadium has
9:4:%% seats4but holds5%4%%% people+ith standingareas( ;t islocated at "li)is4Bacolod City(
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SCENARIO
The girl on the bridge is s loo3ing do+n at the boy
??(=$ t a+ay rom the bridge at an angleo =:o( &o+ tall +ould she be rom theground i she>s standing on the bridge@
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Commercia%
Bui%(ing
The L> fsher
hotel islocated at 9
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SCENARIO
The girl across L> fsher hotel +hostands
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Bas)et-a%% Ring
Stan(* TCS Bas)et-a%%Court
TrinityChristian-chool islocated at illa
"ngela -ubd(4Brgy(illamonteBacolod City(
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SCENARIO" boy standing
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COMUTATIONS
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anaa( Sta(ium
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L+,sher !ote%
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TCS Bas)et-a%% Court
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IMORTANCE
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!anaad -tadium
Economic Im'act.
The height o the bridge has limitations in termso the height o some vehicles passing under it(
"s +e all 3no+ !ublic .tility ehicles4 !ublic.tility Jeepneys and !rivate ehicles do vary insi8es because o its designated design thusgiving them an advantage to pass under thebridge( ;n the case o the bridge in the !anaad
tadium not all vehicles can pass by4 duringevents li3e !anaad -a Aegros +here people bringtheir amilies in buses and other large vehicles(
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-olution
or the beneft o all the vehicles4 i thebridge +as built a bit higher4 it canaccommodate all vehicles( Trac +ouldn>tarise or the mere act that truc3 driversand bus drivers +ould not have hesitationsto pass under it because they 3no+ thebridge is capable o letting them pass due
to its taller height(
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L>fsher &otel Economic Im'act.
Due to the alluring impact and good amenities o
L Ffsher hotel it became +ell 3no+n here in Bacolod City(
Every Gass3ara estival4 it>s easy access to diHerentplaces made it more convenient to stay +ith( The taIthat this building pays add up to the taIes that ourgovernment has that +ould defnitely be converted tounds or the diHerent pro)ects o our government or the
betterment o our country( Though L> fsher>s location isvery accessible4 the place +here it is located isbecoming congested because other ne+ commercialbuildings that +ere built near there is causing trac onthe Lacson street itsel(
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So%ution.
;t is better or the hotel to relocate i everthey still have plans in eItending and
improving their appearance( Though i everthey do relocate4 they should also reconsiderthe accessibility o their customers i theystill +ant to continue in the business section
o our society(
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TC- Bas3etball Court
Economic impact
The structure +as +ell built4 since the ring is instandard height and the court is +ide( The structure isadvantageous or events li3e riendly matches andsports ests because it can hold t+o gamessimultaneously(
-olution
The school should host riendly matches to ma3e useo the +ell# built court(
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CONCLUSION
e have concluded that using trigonometry0trigonometric unctions14 especially the righttriangle4 !ythagorean Theorem4 and the angles
o elevation and depression could be o greathelp in determining un3no+n distances andangles o various structures +hen instrumentsand tools or measuring become inaccessibleand unavailable( "nd also by usingtrigonometric unctions4 measuring +ould be alot aster and easier than using the manual +ayo measuring(
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RECOMMENDATION
e recommend the use o other techniuesand methods or measuring( .sing tools that+ould +or3 better than clinometers are highly
recommended( "nd also in terms o measuring4more accurate measurements o the parts areimportant in determining the right measuremento the +hole structure( The more accurate you are
+ith your measurements4 the more li3ely you +illcome up +ith the correct results(
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RE#LECTION
;n this .BD pro)ect +e have learned that it ta3est+o to tango to fnish any feld +or3( Camaraderieand patience +ere the main actors +hy +e have
fnished this study in right time( e also learned toappreciate the beauty o trigonometry or it toachieve such brilliant ideas li3e that( ;trigonometry +asn>t discovered inrastructuressuch as home4 commercial buildings and landmar3+ouldn>t arise( ;ndeed4 Trigonometry becomes veryuseul and handy +hen tools or measuring areunavailable( Trig( is )ust simply ama8ing
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DOCUMENTATION
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T!E END