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If tantheta=4/5 , find the value of (...

If `tantheta=4/5` , find the value of `(costheta-sintheta)/(costheta+sintheta)` .

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The correct Answer is:
`1/9`
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UNIQUE PUBLICATION-TRIGONOMETRY-UNIQUE PRACTICE SESSION
  1. Prove: (costheta)/(1-sintheta)=(1+sintheta)/(costheta)

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  2. सिद्ध कीजिए कि : sin^(2) theta + cos^(4) theta = cos^(2) theta + sin...

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  3. If tantheta=4/5 , find the value of (costheta-sintheta)/(costheta+s...

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  4. If cosec theta - cot theta = alpha, write the value of cosec theta + c...

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  5. If tan theta=1, then (sin theta+cos theta)/(sec theta+cosec theta)=

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  6. त्रिकोणमितीय सर्वसमिकाओं को सिद्ध करो : (1)/(cosec A- cot A )-(1)/(s...

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  7. Prove that sqrt((1+sintheta)/(1-sintheta))=sectheta+tantheta

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  8. The length of the shadow of a tower standing on level plane is foun...

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  9. A circus artist is climbing from the ground along a rope stretched ...

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  10. An observer at a distance of 10 m from a tree looks at the top of the ...

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  11. From the top of a building , an observer is looking at a scooter parke...

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  12. The angle of elevation of a jet plane from a point A on the grund is 6...

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  13. Prove that : (tan theta)/(sec theta -1) + (tan theta)/(sec theta + 1...

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  14. Prove that (1+tan theta )^2 + (1+cot theta)^2 = (sec theta + cosec t...

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  15. Prove that (1 + 1/(tan^2A)) (1 + 1/(cot^2A)) = 1/(sin^2 A - sin^4 A )

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  16. Prove that: (sectheta-1)/(sectheta+1)=((sintheta)/(1+costheta))^2

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  17. Two buildings are in front of each other on either side of a road of w...

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  18. If 5 sin theta - 12 cos theta = 0 , find the values of sec theta and c...

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  19. To find the width the river, a man observes the top of a tower on the ...

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  20. Eliminate theta if x=a cot theta -b cosec theta and y=acot theta+b cos...

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