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

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

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VGS PUBLICATION-BRILLIANT-TRIGONOMETRY-EXERCISE
  1. Are these identities true only for 0^(@) le A le 90 ^(@) ? If not ,fo...

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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  18. Show that 1/cos O/-cos O/ = tan O/ cdot sinO/(0^o < O/ <90^o)

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  19. Simplify sec A (1-sin A ) (secA+tan A)

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  20. Prove that ( sin A+ cosec A)^2+(cos A+sec A)^2=7+tan^2 A+ cot^2 A.

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