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The value of tan 3A - tan 2A - tan A is ...

The value of `tan 3A - tan 2A - tan A` is equal to

A

tan 3A tan 2A tan A

B

`-tan 3A tan 2A tan A`

C

tan A tan 2A- tan 2A tan 3A- tan 3A tan A

D

none of these

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The correct Answer is:
A
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ML KHANNA-TRIGONOMETRY RATIOS AND IDENTITIES-MISCELLANEOUS EXERCISE (SELF ASSESSMENT TEST)
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  2. tan 75^(@) - cot 75^(@)=

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  3. The value of tan 3A - tan 2A - tan A is equal to

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  4. Prove than tan 56^(@) =("cos " 11^(@) + "sin " 11^(@))/("cos " 11^(...

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  5. tan54^(@) can be expressed as

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  7. The value of sin(45^(@)+theta) - cos(45^(@)-theta) is

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  8. If sintheta=(-4)/(5) and theta lies in third quadrant, then the value...

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  9. If tan theta = 3 and theta lies in thrid quadrant, then the value of s...

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  10. If sin alpha = 12//13 , ( 0 lt alpha lt pi //2) and cos beta = - ( 3)...

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  11. If theta and phi are angles in the first quadrant such that tan theta ...

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  12. The value of cos ( pi //5) cos ( 2pi //5) cos ( 4pi //5) cos ( 8pi //5...

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  13. sin 20^(@) sin 40^(@) sin 60^(@) sin 80^(@) =(3)/(16)

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  14. The value of sqrt3 cosec20^@-sec20^@ is equal to:

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  15. Givent that pi/2,alphaltpi then the expression sqrt((1-sinalpha)/(1+si...

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  16. If tan alpha =(b)/(a), a gt b gt 0 and " if " 0 lt alpha lt (pi)/(4), ...

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  17. If cos(A-B)=3/5and tan A tanB=2, then

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  18. If A +B = ( pi )/( 3) and cos A + cos B =1, then which of the followin...

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  19. If Sigma n^2 = lambda Sigma n, then sin^(-1) "" ((9 lambda^2 - 4 n^2)/...

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  20. If A = 580^(@) then

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