Establish the identity.cos(4?) = cos4 ? - 6 sin2 ? cos2 ? + sin4 ?

What will be an ideal response?

cos(4?) = cos[2(2?)] = cos2(2?) - sin2(2?) =   = cos4 ? - 6 sin2 ? cos2 ? + sin4 ?

Mathematics

You might also like to view...

Perform the indicated operation. ? 

A. - 
B. -x
C. x
D. 1

View
Mathematics

Graph the function by plotting points.g(x) = - x - 6

A.

B.

C.

D.

View
Mathematics

Decide if the number is rational or irrational.

A. Rational B. Irrational

View
Mathematics

Determine the approximate area of the given circle, using 3.14 for ?. Round the answer to the nearest hundredth.

A. 1962.5 mi2 B. 7850 mi2 C. 157 mi2 D. 314 mi2

View
Mathematics