Question

cos ⁴ theta-sin⁴ theta​

Answer 1

Answer:

0.103158874444

may be

i am not sure about this answer

Answer 2

Ans is Cos2@

(Cos@)^4 - (Sin@)^4)

( (Cos@)^2 - (Sin@)^2) ) × ( (Cos@)^2 + (Sin@)^2) )

Cos2@ × 1

Cos2@