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Let f( theta) = ( cos theta - "cos" (pi...

Let ` f( theta) = ( cos theta - "cos" (pi)/(8))(cos theta - "cos" (3 pi)/(8))(cos theta - "cos" (5 pi)/(8) )(cos theta - "cos" (7pi)/(8))` then :

A

maximum value of ` f(theta ) AA theta in R ` is ` (1)/(4) `

B

maximum value of ` f(theta) AA theta in R ` is ` (1)/(8) `

C

` f(0)= (1)/(8) `

D

Number of principle solutions of ` f(theta) = 0 ` is 8

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The correct Answer is:
B, C, D
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