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Trigonometry Examples

Popular Problems

Simplify 2cos(theta)^2-1

$2 \cos^{2} (θ) - 1$

Step 1

Apply the cosine double-angle identity.

$\cos (2 θ)$

$[\begin{array}{c} x^{2} & \frac{1}{2} \\ \sqrt{π} & \int x d x \end{array}]$

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