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If Sin theta(1) + Sin theta(2) + Sin the...

If `Sin theta_(1) + Sin theta_(2) + Sin theta_(3) = 3` then `Cos theta_(1) + Cos theta_(2) + Cos theta_(3) = `

A

1

B

3

C

0

D

-3

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AAKASH SERIES-TRIGONOMERTIC RATIOS-PRACTICE EXERCISE
  1. If A=tan 1, B = tan. 9/5 then

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  2. A= sin 1, B = cos 1, C = tan 1 then the ascending order is

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  3. If Sin theta(1) + Sin theta(2) + Sin theta(3) = 3 then Cos theta(1) + ...

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  4. If Cos theta(1) + Cos theta(2) + Cos theta(3) = 3 then Sin theta(1) +...

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  5. If cos theta + sec theta = 2 then cos^(n) theta + sec^(n) theta =

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  6. If cot theta + tan theta = 2 then cot^(n) theta + tan^(n) theta =

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  7. If cot ( alpha + beta) = 0 then sin ( alpha + 2 beta) =

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  8. If tan ( alpha + beta) = sqrt(3), tan ( alpha - beta ) =1 then tan 6 ...

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  9. If n is even then sin theta + sin ( pi + theta ) + sin (2 pi + theta) ...

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  10. sin 10^(@) + sin 20^(@) + sin30^(@) + .......sin 360^(@)=

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  11. cos 20^(@) + cos 40^(@) + cos 60^(@) +...+cos160^(@)+cos 180^(@)=

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  12. cos5^(@) + cos 24^(@) + cos 175^(@) + cos 204^(@) + cos 300^(@) =

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  13. cos. (pi)/(13) + cos. (5pi)/(13) + cos. (8pi)/(13) + cos. (12pi)/(13)=

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  14. cos. (3pi)/(19) + cos . (7pi)/(19) + cos. (12pi)/(19) + cos. (16pi)/(1...

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  15. tan. (pi)/(10) + tan. (3pi)/(10) + tan. (7pi)/(10) + tan. (9pi)/(10) ...

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  16. If alpha , beta are supplementary angles , then cos^(2)alpha + sin^(...

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  17. If ABCD is a quadrilateral then Sec^(2) ((A+B)/(4))- Cot^(2) ((C+D)/(...

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  18. If ABCD is a cyclic quadrilateral then co (180^(@) +A) + cos (180^(@)...

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  19. If alpha , beta are complementary angles , sin alpha = 3//5 , then s...

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  20. Prove that sin^(2)5^(@) +sin^(2)10^(@) + sin^(2)15^(@)+...+sin^(2)90^(...

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