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The number of all possible triplets (a1,...

The number of all possible triplets `(a_1,a_2,a_3)` such that : `a_1 + a_2cos2x + a_3sin^2x = 0` for all x is :

A

0

B

1

C

2

D

infinite

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PATHFINDER-TRIGONOMETRIC EQUATION AND INVERSE-QUESTION BANK
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