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10 questions from this quiz
Trigonometric equations
2 sin A/2 cos A/2
tan A/2
1 - t^2 / 1 + t^2
1/2
Simplify integrals
θ = 60
t = 2t / 1 - t^2
cos^2 A/2 - sin^2 A/2
1/√3
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