highschoolmom2010
using sin, cos or tan find the value of X



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ganeshie8
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SOHCAHTOA

ganeshie8
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go to the given angle corner, and look at the triangle.
figure out wat adjacent side and hypotenuse are

ganeshie8
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dw:1376246607998:dw

highschoolmom2010
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adjacent is x
and opposite is unknown

highschoolmom2010
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hypotenuse is 11

ganeshie8
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yes !

highschoolmom2010
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so we use cos

ganeshie8
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you want to find x, which is adjacent
you knw the hypotenuse
so, which trig ratio helps us ?

ganeshie8
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yes, cos !!

highschoolmom2010
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\[\cos 41=\frac{ x }{ 11 }\]

ganeshie8
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perfect !

highschoolmom2010
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\[(11*)\cos 41=\frac{ x }{ 11 }*11\]
\[11\cos 41=8.3\]

ganeshie8
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8.3 = \(\large \color{red}{\checkmark}\)

highschoolmom2010
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so i did it right :DDD

ganeshie8
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you did great :) good work !!

highschoolmom2010
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thanks i think i understand this now

ganeshie8
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good :D