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For which value of an acute angle theta...

For which value of an acute angle ` theta ,(i) ( cos theta )/( 1-sin theta ) +(cos theta )/( 1+sin theta ) =4 `is true ?
For which value of ` 0^(@) le theta le 90 ^(@) ,` above equation is not defined?

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VGS PUBLICATION-BRILLIANT-TRIGONOMETRY-EXERCISE
  1. If A , B and C are interior angles of a triangle ABC, then show that t...

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

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

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

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

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  6. If sin C =( 15)/(17) , then find cos C ,

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  7. If tan x = ( 5)/( 12), then find sec x.

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  8. If cosec theta =(25)/( 7), then find cot theta

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  9. Evaluate the following and justify your answer. (i) (sin ^(2) 15^(...

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  10. Find sin 5^(@) cos 85^(@) +cos 5^(@) sin 85^(@)

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  11. Find sec 16^(@) cosec 74^(@) -cot 74^(@) tan 16^(@)

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  12. Show that cot theta +tan theta =sec theta cosec theta

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  13. Show that tan ^(2) theta +tan ^(4) theta =sec ^(4) theta -sec ^(2) th...

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  14. Prove that sqrt( (1+costheta)/(1-costheta) )= cosectheta+cottheta.(0^@...

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  15. Evaluate the following (1+tan theta +sec theta ) ( 1+cot theta -cos...

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  16. (sin theta + cos theta)^(2) + (sin theta - cos theta)^(2)=

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  17. (sec^(2) theta -1)(cosec^(2) theta-1)=

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  18. Show that (cosec theta -cot theta )^(2) =(1-cos theta )/( 1+cos theta ...

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  19. sqrt (( 1 + sin A ) /( 1 - sin A )) = sec A + tan A చూపండి.

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

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