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Find the value of each of the following....

Find the value of each of the following.
`cot(-315^(@))`

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VIKRAM PUBLICATION ( ANDHRA PUBLICATION)-TRIGONOMETRIC RATIOS UPTO TRANSFORMATIONS-EXERCISE - 6(A)
  1. Find the value of each of the following. cos(-(7pi)/2)?

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  2. Find the value of each of the following. sec(2100^(@))

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  3. Find the value of each of the following. cot(-315^(@))

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  4. Evaluate cos^(2)45^(@)+cos^(2)135^(@)+cos^(2)225^(@)+cos^(2)315^(@).

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  5. sin^(2)""(2pi)/(3)+ cos^(2)""(5pi)/6-tan^(2)""(3pi)/4=

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  6. Evaluate. cos225^(@)-sin225^(@)+tan495^(@)-cot495^(@)

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  7. Evaluate (iv) (cos theta - sin theta) if (a) theta = (7 pi)/(4) (...

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  8. IF sintheta=-1/3 and theta does not lie in the 3^(rd) quadrant, find t...

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  9. If cos theta = t(0lt t lt 1) and theta does not lies in the first qua...

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  10. Find sin330^@.cos120^@+ cos210^@.sin300^@

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  11. If cosec theta + cot theta =1//3, then find cos theta and determine th...

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  12. If sin alpha + "cosec" alpha = 2, find value of sin^(n) alpha + "cosec...

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  13. If sec theta + tan theta =5, then find sin theta and determine the qu...

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  14. Prove that sin 780^(@) sin 480^(@)+cos240^(@). Cos300^(@) = 1/2

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  15. Show that cot.(pi)/(20). cot .(3pi)/(20). cot.(5pi)/(20). cot .(7pi)...

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  16. Simplify. (sigmatauv(-(11pi)/3)taualphav((35pi)/6)sigmaepsilonchi(-(...

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  17. If tan20^(@)=p then prove that = (tan610^(@)+tan700^(@))/(tan 560^(@)-...

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  18. If alpha , beta are complementry angles such that bsin alpha = a, the ...

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  19. If cos A = cos B = -1/2 and A does not lie in the second quadrant and ...

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  20. If 8 tan A = -15 and 25 sin B = -7 and neither A nor B is in the four...

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