Rewrite the expression as an equivalent expression that does not contain powers of trigonometric functions greater than 1.f(x) = 8 cos2 x

A. 16 cos x
B. 4 + 4 cos 2x
C. 1 + cos 2x
D. 4 - 4 cos 2x


Answer: B

Mathematics

You might also like to view...

 Find all angles in [0°, 360°) that satisfy the equation.sin ? = - 

A. {45°, 225°} B. {225°, 315°} C. {135°, 225°} D. {45°, 315°}

Mathematics

Determine whether the given value is a solution of the inequality.a - 8 < -15;  -8

A. A solution B. Not a solution

Mathematics

Simplify by using the distributive law and combining like terms.x - (8x + 7)

A. -14x B. 7x - 7 C. -7x + 7 D. -7x - 7

Mathematics

Write the digits for the given period (group) in the whole number.94,576,662millionsthousandsones

A. millions 94 thousands 576 ones 662 B. millions 9 thousands 5 ones 6 C. millions 94 thousands 76 ones 62 D. millions 4 thousands 6 ones 2

Mathematics