What is expand cos^2(θ)-sin^2(θ) ?

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

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expand cos^2(θ)-sin^2(θ)

expand

cos^{2} (θ) - sin^{2} (θ)

cos (2 θ)

Solution steps

cos^{2} (θ) - sin^{2} (θ)

Rewrite using trig identities

= cos (2 θ)

\frac{o gx ( x ^{2} + 9 ) - 1}{2}

\frac{( 2 x + 5 ) ( 2 x - 1 )}{2}

\frac{24}{( s ^{2} + 6 s + 18 ) ^{2}}

\frac{1}{( a - s ) ^{2}}

(11 - 1.1 t) d x

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