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SOHCAHTOA Quiz 2
Sine, Cosine and Tangent Practice 2
Practice Problems
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In the triangle on the left, what side is adjacent to MLN?
ML
What side is the hypotenuse?
LN
Calculate cos(MLN)
cos(MLN)= adjacent/hypotenuse= 8/10 = .8
Calculate cos(MNL)
cos(LMN)
= adjacent/hypotenuse=6/10 = .6
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Find the sine, cosine and tangent of a:
sin(a)= opp/hyp = 12/13 = .923
cos(a)= adj/hyp = 9/13 = .69
tan(a)= opp/adj = 12/9 = 1.3
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Medium Problems: Sine, Cosine, Tangent
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How can you use sine,cosine or tangent to find the value of x in the triangle on the left?
Set up a trigonmetric ratio involving BR, the adjacent side, and X, the opposite side. 
tan(52) =x/18
Solve the equation
18 × tan(52)=x
x= 23
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Click for Pythagorean Theorem Connection
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Use SOHCAHTOA to find x in  HIJ?
cos(16) = 24/x x = 24/cos(16) = 25
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