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Find the values of the following trigono...

Find the values of the following trigonometric ratio: `cos210^0`

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RD SHARMA ENGLISH-TRIGONOMETRIC FUNCTIONS-All Questions
  1. If costheta=-3/5 and pilttheta<(3pi)/2 find the values of other five ...

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  2. Find the values of the following trigonometric ratio: sin315^0

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  3. Find the values of the following trigonometric ratio: cos210^0

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  4. Find the values of the following trigonometric ratio: "cos"(-480^0)

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  5. Find the values of the following trigonometric ratio: sin(-1125^@)

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  6. Prove that: cos510^0cos 330^0+sin 390^0cos 120^0=-1.

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  7. Prove that ("cos"(90^0+theta)"sec"(-theta)"tan"(180^0-theta))/("sec"(3...

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  8. If A ,\ B ,\ C ,\ D are angles of a cyclic quadrilateral, prove that c...

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  9. Find the values of the following trigonometric ratio: sin ((5pi)/3) .

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  10. Find the values of the following trigonometric ratio: sin 3060^@

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  11. Find the values of the following trigonometric ratio: tan ((11pi)/6)

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  12. Find the values of the following trigonometric ratio: cos (1125^@)

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  13. Find the values of the following trigonometric ratio: tan315^0

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  14. Find the values of the following trigonometric ratio: cosec\ (-1200^0)

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  15. Find the values of the following trigonometric ratio: cos1755^0

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  16. Find the values of the following trigonometric ratio: sin510^0

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  17. Find the values of the following trigonometric ratio: tan(-585^0)

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  18. Find the values of the following trigonometric ratio: sin 4530^0

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  19. Find the values of the following trigonometric ratio: cos570^0

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  20. Find the values of the following trigonometric ratio: cos 855^0

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