What is 2sin^2(x)-sin(x)-1 ?

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

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

simplify 2sin^2(x)-sin(x)-1

simplify

2 sin^{2} (x) - sin (x) - 1

- sin (x) - cos (2 x)

Solution steps

2 sin^{2} (x) - sin (x) - 1

Use the Double Angle identity:

1 - 2 sin^{2} (x) = cos (2 x)

- 1 + 2 sin^{2} (x) = - cos (2 x)

= - sin (x) - cos (2 x)

(5 - 3)^{2}

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

54 x y^{4}

(2 \cdot 3)!

- 8^{5}

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