Question

For the right triangle shown, which expression represents the length of CA?

a. 5cos(25°)
b. 5tan(25°)
c. 5/sin(25°)
d. sin(25°)/5

Answer 1

B

Explanation:

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Answer 2

b. 5tan(25°)

Explanation:

The tangent function gives the ratio between the side opposite and the side adjacent to the angle. That is ...

tan(25°) = ?/5

Multiplying by 5 solves the equation:

? = 5·tan(25°)