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The number of different values of theta...

The number of different values of ` theta ` satisfying the equation ` cos theta + cos 2 theta = -1 ` , and at the same time satisfying the condition ` 0 lt theta lt 360^(@) ` is :

A

1

B

2

C

3

D

4

Text Solution

Verified by Experts

The correct Answer is:
D
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