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40 votes
40 votes
Instructions: Find the measure of the indicated angle to the nearest

degree
21
?
40
?=

Instructions: Find the measure of the indicated angle to the nearest degree 21 ? 40 ?=-example-1
User Situee
by
3.0k points

1 Answer

18 votes
18 votes

Since this is a right triangle, we can use one of the three main trigonometric functions: sine, cosine, or tangent.

Remember: SOH-CAH-TOA

Looking from the angle, we know the opposite side and the hypotenuse. Therefore, we should use the sine function.

sin(x) = 21/40

x = sin^-1(21/40)

x = 32 degrees

Hope this helps!

User Sambath Prum
by
3.6k points