Question

Cos^6 x reduce power in terms of first power of cosine

Answer 1

`\dashrightarrow{ \mathfrak{ { cos}^(6)(x) }} \\ \\ \dashrightarrow{ \mathfrak{ \{cos {}^(2) (x) \} {}^(3) }} \\ { \colorbox{silver}{from \: double \: angles}} \\ \\ \dashrightarrow{ \boxed{ \mathfrak{ \{ (1)/(2) cos(2x) + (1)/(2) \} {}^(3) }}} \\ \\`