Page 246 - sscbbb

(4/3) cot2 (π /6) + 3 cot2 (150°) – 4 cosec2 45° + 8 sin (π /2) का भान क्मा है?
17 February 2018 SSC MAINS
[A] 25/4 [B] 1 [C] – 7/2 [D] 13/2
133. What is the value of sin (B – C) cos (A – D) + sin (A – B) cos (C – D) + sin (C – A) cos (B – D)?
sin (B – C) cos (A – D) + sin (A – B) cos (C – D) + sin (C – A) cos (B – D) का भान क्मा
है?
[A] 3/2
[B] – 3
17 February 2018 SSC MAINS
[C] 1 [D] 0 } ?
17 February 2018 SSC MAINS
134. { [A] 1
[C] 0 [D] 2
cos [(180 – θ)/2] cos [(180 – 9θ)/2] + sin [(180 – 3θ)/2] sin [(180 – 13θ)/2] का भान क्मा
17 February 2018 SSC MAINS
[B] – 1
135. What is the value of cos [(180 – θ)/2] cos [(180 – 9θ)/2] + sin [(180 – 3θ)/2] sin
[(180 – 13θ)/2]? है?
[A] sin 2θ sin 4θ
[C] sin 2θ sin 6θ
136. What is the value of [tan2 (90- ) - sin2 (90- ) ] cosec2 (90- ) cot2 (90- )
[tan2 (90- ) - sin2 (90- ) ] cosec2 (90- ) cot2 (90- ) का भान क्मा है?
17 February 2018 SSC MAINS
[A] 0 [B] 1 [C] – 1 [D] 2
137. Two points P and Q are at the distance of x and y (where y > x) respectively from the base of a building and on a straight line. If the angles of elevation of the top of the building from points P and Q are complementary, then what is the height of the building?
दोबफदॊ ुPऔयQएकइभायतके आधायसेक्रभश:xऔयy(जहाॉy>x)कीदयू ीऩयहैंऔयएकसीधी येखाऩयहै।मददबफदॊ ुPऔयQसेइभायतके शीषणकाउन्नमनकोणऩयू कहैं,तोइभायतकीऊॊचाईक्मा
है? 17 February 2018 SSC MAINS
[A] xy [B] √(y/x) [C] √(x/y) [D] √xy
138. The tops of two poles of height 60 metres and 35 metres are connected by a rope. If the rope makes an angle with the horizontal whose tangent is 5/9 metres, then what is the distance (in metres) between the two poles?
[B] cos 2θ cos 6θ [D] cos 2θ cos 4θ
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