en

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

simplify 2cos^2(x)-1

Solution

simplify

2 cos^{2} (x) - 1

Solution

cos (2 x)

Solution steps

2 cos^{2} (x) - 1

Rewrite using trig identities

= cos (2 x)

Popular Examples

simplify (sin(x))/(tan(x))simplify

\frac{sin ( x )}{tan ( x )}

factor 2x^4-18x^2 factor

2 x^{4} - 18 x^{2}

simplify 1-sin^2(θ)simplify

1 - sin^{2} (θ)

simplify sin^2(3x)+cos^2(3x)simplify

sin^{2} (3 x) + cos^{2} (3 x)

simplify cot(x)sin(x)simplify

cot (x) sin (x)

Frequently Asked Questions (FAQ)

What is 2cos^2(x)-1 ?
The solution to 2cos^2(x)-1 is cos(2x)