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tan54^(@) can be expressed as...

`tan54^(@)` can be expressed as

A

`(cos 9^(@) - sin 9^(@)) // ( cos 9^(@) + sin 9^(@))`

B

`( sin 9^(@) - cos 9^(@)) // ( sin 9^(@) + cos 9^(@))`

C

`( cos 9^(@) + sin 9^(@) )// ( cos 9^(@) - sin 9^(@))`

D

`( sin 9^(@)+ cos 9^(@)) // ( sin 9^(@) - cos 9^(@))`

Text Solution

Verified by Experts

The correct Answer is:
C
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ML KHANNA-TRIGONOMETRY RATIOS AND IDENTITIES-MISCELLANEOUS EXERCISE (SELF ASSESSMENT TEST)
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  2. Prove than tan 56^(@) =("cos " 11^(@) + "sin " 11^(@))/("cos " 11^(...

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  3. tan54^(@) can be expressed as

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  4. If 4 n alpha = pi then the value of tan alpha tan 2 alpha tan 3 alpha ...

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

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

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

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

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

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

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

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

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

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

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

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

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

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  18. If A = 580^(@) then

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  19. If 2 cos ( A//2) = sqrt(( 1+ sin A )) - sqrt(( 1- sin A )) , then

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  20. If cos(alpha+beta)=4/5, sin(alpha-beta)=5/13and alpha, beta between 0 ...

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