2 + (-1)" 3+(-1)" O.1.1.3 1- 33.5 3-5 - 7 ,1-3-5 --- (2n – 1) - +(-1) 3.5.7- (2n + 1 3-5 E(-1)" sin

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A: Step 1:Step 2: Step 3: Step 4: thanks

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Q: C. If sin A+ sin2 A = 1 and a cos12A +b cos® A+ c cos A - 1 = 0 then b + - + b =? %3D %3D

A: Topic = Trigonometry

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A:

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.