Question

Use trig ratios to find the measure of the angle in this triangle. A .cos^-1(4/5) B. tan(4/5) tan^-1(4/5) C. sin(4/5) D. cos(4/5) E. sin^-1(4/5)

Answer 1

The answer is A

Explanation:

Step 1: Use Cosine to find ∅

Cos∅=
`(4)/(5)`

∅=Cos
`^(-1)`(
`(4)/(5)`)

Therefore the answer is A