Hello, How is tan^-1 (tan (6pi/7)=-pi/7 possible? I don't know how it should be a negative or to use the unit circle to find this exact value.

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Q: 4) Simplifying the Trigonometric ldentity tanx cosx

A: Explanation of the answer is as follows

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A: y=10sin7x

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A:

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A: Giventan(4π7)

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A:

Q: 5) Evaluate the given expression without the aid of a calculator tan[arcsin( +1 x+ 6 --)]

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A: arc tan(-x) =-arc tan(x) arc csc(csc(x)) =x Note : According to our guideline, we can solve first…

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A: Given the integral is ∫1+sinydy

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A: To draw the graph of transforms of y= sin(x)

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A: solution

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A: Our objective is to explain how we got from one step to the next using trigonometric identities.

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A: See the attachment

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A: The function given is

Fundamentals of Trigonometric Identities

Trigonometric Identities are the equalities that involve trigonometry functions and hold for all the values of variables given in the equation.