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If tan theta = 5 a - (1)/(20a) then sec...

If `tan theta = 5 a - (1)/(20a) ` then `sec theta + tan theta =`

A

10a (or) `(1)/(10a)`

B

`(1)/(10a)` (or) -10a

C

`- (1)/(10a)` (or) -10a

D

10a (or) `- (1)/(10a)`

Text Solution

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The correct Answer is:
D
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AAKASH SERIES-TRIGONOMERTIC RATIOS-PRACTICE EXERCISE
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  4. If 1+4 tan theta = 4 sec theta then cos theta=

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  9. (sin^(2)alpha)/(1+cot^(2) alpha) + (tan^(2)alpha)/((1+tan^(2) alpha)^(...

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  10. If (2 sin theta )/(1+ cos theta + sin theta )=x, find the value of (1...

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  13. If sin theta + sin^(2) theta =1 then cos^(4) theta + cos^(8) theta + 2...

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  14. If sqrt((1+cos alpha)/(1-cos alpha))=cosec alpha + cot alpha, then the...

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  15. If cos theta - sin theta = sqrt(2) sin theta " then " cos theta + si...

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  16. If Cos theta - Sin theta = sqrt(2) Cos theta then Cos theta + Sin thet...

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  17. If a = Cos theta - Sin theta, b = Cos^(3) theta - Sin^(3) theta, then

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  19. If x=r cos alpha cos beta cos gamma , y= cos alpha cos beta sin gamma...

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  20. If x= cot theta + cos theta , y= cot theta - cos theta , " then " (x^...

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