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anonymous
 5 years ago
Write the trigonometric expression in terms of sine and cosine, and then simplify.
cos^2(theta)(1+tan^2(theta))
anonymous
 5 years ago
Write the trigonometric expression in terms of sine and cosine, and then simplify. cos^2(theta)(1+tan^2(theta))

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I used x instead of thetha ... easier to type... everywhere you see an x replace it with a theta ... If you don't understand a step, let me know. cos^2x(1 + tan^2x) cos^2x(1 + sin^2x  cos^2x) cos^2x( cos^2x + sin^2x   cos^2x cos^2x cos^2x ( cos^2x + sin^2x)  cos^2x the cos^2x's cancel and cos^2x + sin^2x = 1 so the answer is 1
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