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Evaluate (sec 35^(@))/( cosec 55^(@))...

Evaluate `(sec 35^(@))/( cosec 55^(@)) `

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VGS PUBLICATION-BRILLIANT-TRIGONOMETRY-EXERCISE
  1. Check and discuss the above relations in the case of angles between 0°...

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  2. Check and discuss the above relations in the case of angles between 0°...

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  3. Evaluate (sec 35^(@))/( cosec 55^(@))

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  4. If cos 7A =sin (A-6^(@)) , where 7A is an acute angle ,find the valu...

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  5. If sin A =cos B , then prove that A+B =90 ^(@)

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  6. Express sin 81^(@) +tan 81^(@) in terms of trigonometric ratio of angl...

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  7. If A , B and C are interior angles of triangle ABC ,then show that sin...

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  8. Evaluate (tan 36^(@) )/( cot 54^(@))

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  9. cos 12^(0)- sin 78^(0) =

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  10. Evaluate cosec 31^(@) -sec 59^(@)

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  11. Evaluate sin 15^@.sec 75^@.

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  12. Evaluate tan 26^(@) tan 64^(@)

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  13. Show that tan 48^(@) tan 16^(@) tan42^(@) tan 74^(@) =1

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  14. Show that cos 36^(@) cos 54 ^(@) -sin 36^(@) sin 54^(@) =0

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  15. If tan 2A =cot (A-18^(@) ) where 2A is an acute angle , Find the val...

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  16. If tan A =cot B where A and B are acute angles prove that A+B= 90 ^(@...

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  17. If A , B and C are interior angles of a triangle ABC, then show that t...

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  18. Expression sin75^(@) +cos 65^(@) in terms of trigonometric ratios of ...

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  19. For which value of an acute angle theta ,(i) ( cos theta )/( 1-sin th...

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  20. Are these identities true only for 0^(@) le A le 90 ^(@) ? If not ,fo...

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