Prove the following Trig Identities. 2 2 a. sin x + cos²x + tan²x = sinx−1 -cos²x b. sinx+1 (sinx+1) 1+tan²x 1 C. 2 2 1-tan²x cos x-sin x 1 글 cos x

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A: When X=56 then z=-0.40When X=70 then z=+1.00

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Q: upper bound, just write "none." а. (2,3) b. (2,3] С. О

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