Question

SOMEONE PLEASE HELP ME WITH THIS QUESTION!!!

4. Given cos A = 0.25, find angle A in degrees. Round your answer to the nearest to the hundredth.

A. 34.12 degrees
B. 56.78 degrees
C. 75.52 degrees
D. 123.98 degrees

Answer 1

i believe that it is 75.52

Answer 2

Given cos A = 0.25.

we have been asked to find value of the angle A in degree.

As we know that if

`cos \theta=k\\ \\ \text{Then we can write }\\ \\ \theta=cos^(-1)k\\ \\ \text{Thereafter we can find the value of theta using the calculator }`

So using this concept we can write

`A=cos^(-1)0.25\\ \\ A=75.5224\\ \\ A \approx 75.52\\`

Hence the correct option is C.