What is cos^2(4x)-sin^2(4x) ?

The solution to cos^2(4x)-sin^2(4x) is cos(8x)

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

simplify cos^2(4x)-sin^2(4x)

simplify

cos^{2} (4 x) - sin^{2} (4 x)

cos (8 x)

Solution steps

cos^{2} (4 x) - sin^{2} (4 x)

Rewrite using trig identities

= cos (8 x)

(x + 1) \cdot (x + 3)

- 2 x^{2} + 2 x

cos^{2} (\frac{θ}{3}) - sin^{2} (\frac{θ}{3})

\frac{1}{2} x^{\frac{- 1}{2}}

30 \cdot 9