Question

Solve for x in the equation cos(x) = 0.342 using the given angle of 20 degrees. Set up the function using cosine.

a) cos(x) = cos(20°)
b) cos(x) = sin(20°)
c) cos(x) = tan(20°)
d) cos(x) = sec(20°)

Answer 1

To solve the equation cos(x) = 0.342 using the given angle of 20 degrees, the correct setup is cos(x) = cos(20°).

Step-by-step explanation:

To solve the equation cos(x) = 0.342 using the given angle of 20 degrees, we need to find the value of x that satisfies this equation. Since cosine represents the ratio of the adjacent side length to the hypotenuse in a right triangle, we can use the cosine function to find x.

Thus, the correct setup for the function is:

a) cos(x) = cos(20°)