Which of the Following Expressions Is Equivalent to 2 -

question 15

Multiple Choice

Which of the following expressions is equivalent to 2 - 4 cos²x + 4 cos⁴x? ​

• A)2 sin²x + 2 cos²x
• B)2 sin⁴x - 2 cos²x
• C)2 sin2x + 2 cos⁴x
• D)2 sin⁴x + 2 cos⁴x
• E)2 sin⁴x - 2 cos⁴x

---

Definitions:

Tensor Fasciae Latae

A muscle of the thigh that helps to stabilize and move the hip and knee, and is involved in the abduction and internal rotation of the hip.

Tibialis Posterior

A deep muscle of the lower leg that supports the arch of the foot and aids in plantar flexion and inversion of the foot.

Adductor Magnus

A large muscle in the thigh that helps in the movement of drawing the legs together (adduction).

Vastus Lateralis

A muscle in the thigh that is part of the quadriceps group, involved in extending the knee and stabilizing the leg.