Question

How to find the value of x in COSX = 21/25 when looking for the answer in degree form?

A. x = 60 degrees
B. x = 45 degrees
C. x = 30 degrees
D. x = 90 degrees

Answer 1

To find the value of x in COSX = 21/25 when looking for the answer in degree form, use the inverse cosine function to solve for x and obtain the value as approximately 44.42°.

Step-by-step explanation:

To find the value of x in COSX = 21/25 when looking for the answer in degree form, we can use the inverse cosine function (—cos⁻¹) to solve for x. Here's the step-by-step process:

1. Write the equation: COSX = 21/25
2. Use the inverse cosine function to solve for x: x = —cos⁻¹(21/25)
3. Plug in the value into a calculator: x ≈ 44.42°

Therefore, the value of x in degree form is approximately 44.42°.