What is expand (2sin(θ)-1)(sin(θ)+1) ?

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

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expand (2sin(θ)-1)(sin(θ)+1)

expand

(2 sin (θ) - 1) (sin (θ) + 1)

sin (θ) - cos (2 θ)

Solution steps

(2 sin (θ) - 1) (sin (θ) + 1)

Apply FOIL method

(2 sin (θ) - 1) (sin (θ) + 1) : sin (θ) - cos (2 θ)

= sin (θ) - cos (2 θ)

\frac{( 1 + ab ) ^{2}}{( 1 - a ^{2} ) ( 1 - b ^{2} )}

cos (2 \cdot t) U (t - π)

(tan (θ) + cot (θ)) sin (θ)

0 sin (0)

(- 3, - 3) y (2, 4)

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