en

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

simplify cos(npi+pi)

Solution

simplify

cos (nπ + π)

Solution

- (- 1)^{n}

Solution steps

cos (nπ + π)

Rewrite using trig identities

= - cos (πn)

Use the basic trigonometric identity:

cos (nπ) = (- 1)^{n}

= - (- 1)^{n}

Popular Examples

simplify 8cos(x/2+0.1)simplify

8 cos (\frac{x}{2} + 0.1)

simplify cot(360-x)simplify

cot (36 0^{\circ} - x)

simplify sin(arccos(x/3))simplify

sin (arccos (\frac{x}{3}))

simplify tan(1/(sin(x)))simplify

tan (\frac{1}{sin ( x )})

simplify tan(arccos(8x))simplify

tan (arccos (8 x))

Frequently Asked Questions (FAQ)

What is cos(npi+pi) ?
The solution to cos(npi+pi) is -(-1)^n