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If cosec theta + cot theta =k , then pro...

If `cosec theta + cot theta =k ,` then prove that `cos theta =(k^(2)-1)/( k^(2)+1)`

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VGS PUBLICATION-BRILLIANT-TRIGONOMETRY-EXERCISE
  1. Simplify (1-cos theta ) (1+cos theta ) (1+ cot ^(2) theta) .

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  2. If sec theta +tan theta =p, then what is the value of sec theta -tan...

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  3. If cosec theta + cot theta =k , then prove that cos theta =(k^(2)-1)/(...

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  4. Prove that (cot theta -cos theta )/( cot theta +cos theta ) =(cos ec t...

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  5. Prove that (sin theta -cos theta+1 )/( sin theta + cos theta -1) =(1)...

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  6. Prove that (cosec A - sin A ) (sec A -cos A) = ( 1)/( tan A +cot A)

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  7. Prove that ( 1+ sec A)/( sec A) =(sin ^(2) A)/( 1-cos A)

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  8. Show that ((1+tan ^(2) A) /(1+cot ^(2) A ) ) =((1+ tan )/( 1-cot A ))^...

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  9. Prove that ((sec A -1))/( (sec A+1) ) =((1-cos A)/((1+cos A )))

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  10. tan^(2) theta - 1 / cos^(2) theta =-1 అని చూపండి.

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  11. Explain the meaning of cos A.

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  12. If tan O/ = sqrt3 ( O/ is acute angle) then find the value of 1+cos...

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  13. Evaluate (sin 58^o / cos 32^o) + (tan 42^o/ cot 48^o)

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  14. sin A = 1 / sqrt 2 tan B =1 sin (A + B) =

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  15. Express cos O/ in terms of tan O/ .

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  16. If cos O/ = 1/(sqrt2) , then find the value of 4 + cot O/ .

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  17. Is it correct to say that sin O/ = cos (90 - O/)? why?

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  18. Find the value of tan 2A if cos 3A = sin 45^o .

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  19. In a right triangle ABC, right angled at C in which AB = 13cm, BC = 5c...

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  20. cosec 39^(0), sec 51^(0) - tan 51^(0). Cot 39^(0) విలువను గుణించండి.

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