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Simplify 1 - 2^{2} - 2^{2} .

Question

Simplify $1 - 2 sin^{2} θ - 2 cos^{2} θ$ .

- 2

- 1

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Text solutionVerified

The value of

1 - 2 sin^{2} θ - 2 cos^{2} θ

= 1 - 2 (sin^{2} θ + cos^{2} θ)

We know that

sin^{2} θ + cos^{2} θ = 1

So, we have

1 - 2 sin^{2} θ - 2 cos^{2} θ = 1 - 2 (1) = 1 - 2 = - 1

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