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AAKASH SERIES-TRIGONOMERTIC RATIOS-PRACTICE EXERCISE
- If n is even then sin theta + sin ( pi + theta ) + sin (2 pi + theta) ...
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- sin 10^(@) + sin 20^(@) + sin30^(@) + .......sin 360^(@)=
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- cos 20^(@) + cos 40^(@) + cos 60^(@) +...+cos160^(@)+cos 180^(@)=
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- cos5^(@) + cos 24^(@) + cos 175^(@) + cos 204^(@) + cos 300^(@) =
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- cos. (pi)/(13) + cos. (5pi)/(13) + cos. (8pi)/(13) + cos. (12pi)/(13)=
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- cos. (3pi)/(19) + cos . (7pi)/(19) + cos. (12pi)/(19) + cos. (16pi)/(1...
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- tan. (pi)/(10) + tan. (3pi)/(10) + tan. (7pi)/(10) + tan. (9pi)/(10) ...
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- If alpha , beta are supplementary angles , then cos^(2)alpha + sin^(...
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- If ABCD is a quadrilateral then Sec^(2) ((A+B)/(4))- Cot^(2) ((C+D)/(...
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- If ABCD is a cyclic quadrilateral then co (180^(@) +A) + cos (180^(@)...
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- If alpha , beta are complementary angles , sin alpha = 3//5 , then s...
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- Prove that sin^(2)5^(@) +sin^(2)10^(@) + sin^(2)15^(@)+...+sin^(2)90^(...
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- cos^(2)5^(@)+cos^(2)10^(@)+cos^(2)15^(@)+.....+cos^(2) 90^(@)=
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- cos^(@)cos2^(@)cos3^(@).......cos179^(@)=
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- tan10^(@) tan 20^(@) tan 30^(@) tan 40^(@) tan 50^(@) tan 60^(@) tan 7...
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- [(Tan ( pi - x) Tan (1.5 pi + x))/(Cos^(2)(x-1.5pi))-(Cos(1.5pi + x))/...
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- If cos A = 3/4 then (2cos A + 3 sin A)/(4 cos A - sin A) =
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- If theta is acute and (1-a^(2)) sin theta =(1+ a^(2)) cos theta , t...
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- If cot theta=-3//4 and theta is not in the second quadrant , then ...
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- If tan 20^(@) = lambda , " then " (tan 250^@ + tan 340^(@))/(tan 200^...
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