a. Use the formulas for lowering powers to rewrite the expression in terms of the first power of cosine:

Question

(cos^4)x (or cos*x to the 4th power)

b.Use an appropriate Half- Angle Formula to Find the Exact value of the expression:
1. tan 15(Degrees)
2. cos 3pi/8(Radians)

Answer 1

Create a program that uses the same formula above to output
the result; this time, however, prompt the user for the values
a, b, x, and y. Use appropriate variable names and naming
conventions.