1) If Cos 3x = 1/2 , 3x is acute angle then x = ---------  0 a) 15 b) 20 c) 30 d) 45 2) If 4x = Cos 2 30 tan 2 30 tan 2 45 then x = ------- a) 1/4 b) 4 c) 1/16 d) 16 3) If Sin x = 1/2 then Sin 2x = ---- a)  ⎷3 /2 b) √2/2 c) 1 d) √3 / 3 4) In △ ABC if m ( ∠ A ) = 85 0 , Sin B = Cos B then m(∠ C ) = ------- 0 a) 30 b) 45 c) 50 d) 60 5) ABC is right ∆ at B , 3 tan C - 4 = 0 then 25 Sin C Cos C = ------ a) 3 b) 4 c) 25 d) 12 6) 2 Sin 30 0 tan 60 0 = ------- a) √3 b) 3 c) √3/3 d) 1/2 7) If tan 2 60 + Sin 30 - Cos 60 = 3 tan x then x = ----- a) 30 b) 60 c) 90 d) 45 8) The square has ----------- axes of symmetry a) 2 b) 3 c) 4 d) 5 9) If m (∠A) + m ( ∠B) = 90 , Sin (A) = Cos (B) then tan A = ------- a) √2/2 b) 1/2 c) 1 d) √3/2 10) ABC is right ∆ at B , AB = 3 cm , BC = 4 cm then : Sin 2 A + Cos 2 A = ------ a) 3/4 b) 1 c) 1/2 d) 12

Quiz Geo prep 3 first term

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