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If cos x = k cos (x - 2y), then the valu...

If `cos x = k cos (x - 2y),` then the value of `tan (x -y).tan y` is

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ARIHANT PUBLICATION JHARKHAND-TRIGONOMETRIC IDENTITIES-EXAM BOOSTER FOR CRACKING EXAM
  1. Prove than tan 56^(@) =("cos " 11^(@) + "sin " 11^(@))/("cos " 11^(...

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  2. The value of (cos 15^(@) - sin 15^(@))/(cos 15^(@) + sin 15^(@) is

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  3. If tan theta = (x sin phi)/(1-x cos phi) and tan phi =(y sin theta)/(...

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  4. If sin(theta + alpha)=cos(theta + alpha) then the value of tan theta i...

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  5. The value of cos^(2) (theta - phi)/(2) - sin^(2) (theta + phi)/(2) is

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  6. cos^2 4 5^(@)-sin^2 1 5^(@)=

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  7. If 0 le theta le 90^(@), then the value of (5 cos theta - 4)/(3 - 5 si...

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  8. What is the value of cos10^(@)+cos110^(@)+cos130^(@)?

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  9. The value of cos 52^(@) + cos 68^(@) + cos 172^(@) is

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  10. The value of (sin 38^(@) - cos 68^(@))/( cos 68^(@) + sin 38^(@) is

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  11. If cos x = k cos (x - 2y), then the value of tan (x -y).tan y is

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  12. The value of 2 cos x - cos 3x - cos 5x is

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  13. A horse is tied to a post by a rope. If the horse moves along a circul...

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  14. The largest hand of a clock is 42 cm long, then the distance covered b...

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  15. The interior angle of a convex polygon are in AP. The smallest angle i...

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  16. The value for 2(sin^6theta+cos^6theta)-3(sin^4theta+cos^4theta)+1 is

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  17. The value of 2 sec^(2) theta - sec^(4) theta - 2 cosec^(2)theta + cos...

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  18. if sin x + sin^2 x = 1, then the value of cos^2 x + cos^4x is

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  19. If cosec theta - sin theta = a^3, sec theta - cos theta =b^3, then pro...

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  20. If sin theta + cos theta = m and sec theta + "cosec" theta = n, prov...

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