What is (1+cos(2θ))(1-cos(2θ)) ?

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

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simplify (1+cos(2θ))(1-cos(2θ))

simplify

(1 + cos (2 θ)) (1 - cos (2 θ))

sin^{2} (2 θ)

Solution steps

(1 + cos (2 θ)) (1 - cos (2 θ))

Expand

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

= 1 - cos^{2} (2 θ)

Use the Pythagorean identity:

1 = cos^{2} (2 θ) + sin^{2} (2 θ)

1 - cos^{2} (2 θ) = sin^{2} (2 θ)

= sin^{2} (2 θ)

f (t)^{2}

cos (270 - 2 x)

d (ln (x))

3 18 + 22

[7.9]

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