Prove the following derivative formulas using the derivative rules and the derivatives of sinx and cos , ie a) [csc x] d dx d dx = - [sin x] = COS X csc x cotx b) [sec x] = secx tan x c) [cotx] = −csc² x and d dx -[cos x] = - sin x. ==

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A: Step 1: Step 2: Step 3: Step 4:

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A: take derivatrive as we know,  so we can write

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