Question

The equation, a sin x +cos 2x = 2a-7, possesses a solution, if
(A) a<2
(B) 2 smaller tha equal to a less than equal to 6 (C) a > 6
(D) None of these​

Answer 1

Answer:

(D.)

Step-by-step explanation:

-1<sinx>1

-1<cos2x>1

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Answer 2

answer D

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