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Proving Trigonometric Identities 1. sec^2x

Proving Trigonometric Identities1. sec^2x + csc^2x= (sec^2 x)(csc^2 x) 2. sin ^3 x / sin x - cos 3x / cos x = 2 3. 1- cos x/ sin
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I need help proving trigonometric identities. Most of my difficulty lies in actually factoring the equation. For example, one of
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in proving trigonometric identities if cotangent theta multiply sine theta is equal to cosine theta. what is the correct answer?
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in proving trigonometric identities if 1 + sin^2 theta is equal to 2 sin^2 theta + cos^2 theta. what is the correct answer?
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Use the given function value(s), and trigonometric identities(including the cofunction identities), to find the indicated
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I don't understand how I'm supposed set the problem up or what theta is...Use the given function value(s), and trigonometric
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in proving trigonometric identities if cot theta sin theta = cos theta. what is the correct answer?
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what is the correct answer in proving trigonometric identities if tan theta / sin theta = sec theta
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what is the correct answer in proving trigonometric identities if tan theta cos^2 theta + cos^2 theta
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what is the correct answer in proving trigonometric identities if tan theta/sin theta = sec theta
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