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

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

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

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

simplify

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

cos (4 x)

Solution steps

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

Rewrite using trig identities

= cos (4 x)

\frac{sin ( 2 x )}{cos ( 2 x )}

\frac{1 \cdot 1 0 ^{- 3} \cdot 100}{10 \cdot 1 0 ^{- 2}}

2.5 (4 x + 10) - 2 (3 x - 15)

(x + 1)^{3} + (x - 1)^{3} - 2 x^{3}

cot (θ) sin (θ)