What is expand (1-cos(y))^2 ?

The solution to expand (1-cos(y))^2 is 1-2cos(y)+cos^2(y)

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expand (1-cos(y))^2

expand

(1 - cos (y))^{2}

1 - 2 cos (y) + cos^{2} (y)

Solution steps

(1 - cos (y))^{2}

Apply Perfect Square Formula:

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

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

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

Simplify

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

= 1 - 2 cos (y) + cos^{2} (y)

\frac{- 8 x + h x + 8 x ( x + h )}{x ( x + h ) h}

2 x l e f t (x^{2} - 3 x) + 6 x^{2}

(2 x^{6} + \frac{x ^{2}}{6})^{10}

\frac{1}{2 3 x ^{2} + y} (6 x)

e^{2 x} \cdot (e^{- 2 x} x + \frac{1}{2} e^{- 2 x} + c)

What is expand (1-cos(y))^2 ?
The solution to expand (1-cos(y))^2 is 1-2cos(y)+cos^2(y)