Question
Asked Nov 21, 2019
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Solve the equation (x in radians and θ in degrees) for all exact solutions where appropriate. Round approximate answers in radians to four decimal places and approximate answers in degrees to the nearest tenth.

cos2 x - cos x = 0

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Expert Answer

Step 1

Given:

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cos x-cos x= 0

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Step 2

Calculatio...

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cos x-cos.x = 0 cos.x(cos.x-10 cos x 0 or cosx-1 = 0 cos x 0 or cosx = 1 cos.x 0 if x(2n+1) where n = 0,1, 2,3..... 2 cos.r 1 if x 2n7

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