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HIMALAYA PUBLICATION-MEASUREMENT OF ANGLES, TRIGONOMETRIC RATIOS AND RELATION BETWEEN SIDES AND ANGLES OF A TRIANGLE-QUESTION BANK
- cos (pi)/(11)+cos (3 pi)/(11)+cos (5 pi)/(11)+cos (7 pi)/(11)+cos (9 p...
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- cos 20^(circ) cos 40^(circ) cos 60^(circ) cos 80^(circ)=
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- The value of cos""pi/65.cos""(2pi)/65.cos""(4pi)/65.cos""(8pi)/65.cos"...
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- sin 10^(circ) . sin 30^(circ) . sin 50^(circ) . sin 70^(circ)=
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- The value of sin (pi)/(7)+sin (2 pi)/(7)+sin (3 pi)/(7) is
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- In a triangle A B C, tan A+tan B+tan C=6 and tan A . tan B=2, then the...
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- If A+B+C=pi, then cos B+cos C=
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- If A+B+C=180^(circ) then the value of cot (A)/(2)+cot (B)/(2)+cot (C)/...
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- If in a triangle A B C, tan A+tan B+tan C=6 then cot A . cot B . cot C...
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- If A+B+C=pi, prove that sin 2A+sin 2B+sin 2C=4 sinA sin B sinC.
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- If any triangle A B C sin ^(2) A+sin ^(2) B-sin ^(2) C=
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- A tower subtends an angle alpha at a point on the same level as the fo...
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- Two poles are 25 metres and 15 metres high and the line joining their ...
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- The tops of two poles of height 20 mt and 14 mt are connected by a wir...
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- The angle of elevation of the sun, if the length of the shadow of a to...
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- If two towers of heights h(1) and h(2) subtend angles 60^(o) and 30^(c...
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- The angle of depression of the top of a tower at a point 70mts from th...
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- The horizontal distance between two towers is 60mts. The angular eleva...
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- In the triangle A B C, hat(A)=30^(circ), hat(C)=105^(circ) and b=3 sqr...
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- In the triangle A B C, hat(A)=75^(circ), hat(B)=45^(circ), c=sqrt(3), ...
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