(A) AP (B) GP (C) HP (D) None of these I...

(A) AP (B) GP (C) HP (D) None of these If tana V a, where a is a rational number which is not a perfect square, then which of the followin rational number? (B) tan 2a (D) None of these cos 2a (A) sin 2a cot 0 and 5 Then the value of f (a) f(B) is a B Let f (e) cot 0 None of these (C) (B) (A) 2 22. If tan and tan p are the roots 8x -26x +15 30 then cos (a +B) is equal to of the equation 627 (D) None of these 627 (C) (B) 725 23) If sin a t sin a and cos a cos b then tan is equal to of the

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