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Algebra /sin,tan,cos....please help. Advertisement. ... tan θ = 2.550 13. Find the measure of two angles between 0° and 360° with the function value: cos θ = 0.7851

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Simplify: sin(x)/tan(x) + cos(x)tan(x), then sin(x)/tan(x) + cos(x)tan(x) = (sin x)/(sin x / cos x) + cos x ( sin x / cos x) = (sin x)(cos x / sin x) + cos x ( sin x ...

These are called Pythagorean identities, because, as we will see in their proof, they are the trigonometric version of the Pythagorean theorem.

4. cos^2(2x) + sin^2(2x) (I don't know if cos^2 is the correct way to represent cosine squared, but that's what I mean, in any case) Unless I'm making a big mistake ...

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Please Help With These Problems And Show Work 1) sec 2 Θ + tan 2 Θ sec 2Θ = sec 4 Θ

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