What is expand (rcos(θ)-1)^2 ?

The solution to expand (rcos(θ)-1)^2 is r^2cos^2(θ)-2rcos(θ)+1

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

expand (rcos(θ)-1)^2

expand

(r cos (θ) - 1)^{2}

r^{2} cos^{2} (θ) - 2 r cos (θ) + 1

Solution steps

(r cos (θ) - 1)^{2}

Apply Perfect Square Formula:

(a - b)^{2} = a^{2} - 2 ab + b^{2}

(r cos (θ) - 1)^{2} = (r cos (θ))^{2} - 2 r cos (θ) \cdot 1 + 1^{2}

= (r cos (θ))^{2} - 2 r cos (θ) \cdot 1 + 1^{2}

Simplify

(r cos (θ))^{2} - 2 r cos (θ) \cdot 1 + 1^{2} : r^{2} cos^{2} (θ) - 2 r cos (θ) + 1

= r^{2} cos^{2} (θ) - 2 r cos (θ) + 1

\frac{1}{( s - 2 i ) ^{2}} + \frac{1}{( s + 2 i ) ^{2}}

224 (s + s^{'})^{9}

x + 2 (3 x - 2)

(- 9, 6) y (- 7, - 8)

(9.3 + 2.1 i)^{4}

What is expand (rcos(θ)-1)^2 ?
The solution to expand (rcos(θ)-1)^2 is r^2cos^2(θ)-2rcos(θ)+1