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cot 16^(@) cot 44^(@) + cot 44^(@) cot 7...

`cot 16^(@) cot 44^(@) + cot 44^(@) cot 76^(@) - cot 76^(@) cot 16^(@)=`

A

1

B

2

C

3

D

4

Text Solution

Verified by Experts

The correct Answer is:
C
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AAKASH SERIES-TRANSFORMATIONS -PRACTICE SHEET (EXERCIE) (LEVEL-I SINGLE ANSWER TYPE QUESTIONS)
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  2. The value of cos ^(2) 10^(@) - cos 10^(@) cos 50^(@) + cos ^(2) 50^(@)...

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  3. cot 16^(@) cot 44^(@) + cot 44^(@) cot 76^(@) - cot 76^(@) cot 16^(@)=

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  4. Value of (3 + cot 80^(@) cot 20^(@))/( cot 80^(@) cot 20 ^(@))

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  5. The value of sin ^(3) 10^(@) + sin ^(3) 50^(@) - sin ^(3) 70^(@) is eq...

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  6. The value of cot 70^(@) + 4 cos 70^(@) is

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  7. Which of the following is not the value of sin 27^(@) - cos 27^(@) ?

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  8. sin ""(pi)/(14).sin""(3pi)/(14).sin""(5pi)/(14).sin""(7pi)/(14).sin""(...

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  9. In a Quadrilateral ABCD, cos A.cosB + sin C sin D=

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  10. The value of tan 9^(@) - tan 27^(@) - tan 63^(@) + tan 81^(@) is

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  11. (sin (n +1) A +2 sin n A + sin ( n -1) A )/( cos (n +1) A - cos ( n -...

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  12. (sin ^(2) A - sin ^(2) B)/( sin A cos A - sin B cos B) is equal to

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  13. Let (sin(theta-alpha))/(sin(theta-beta))=(a)/(b) and (cos(theta-alpha)...

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  14. sin A + sin B = sqrt(3) ( cos B- cos A )implies sin 3A + sin 3B=

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  15. (sin 3 thea - sin theta sin ^(2) (2 theta ))/( sin theta + sin 2 theta...

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  16. (cos 6 theta + 6 cos 3 theta + 15 cos 2 theta + 10)/( cos 5 theta + 5 ...

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  17. If cos x + cos y + cos z =0 = sin + sin y +sin z then tan (x-y) =

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  18. cos x + cos y + cos z = 0 and sin x + sin y + sin z, then cos ^(2) ((...

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  19. If x and y are acute angle such that cosx+"cos" y=(3)/(2) and sin x+"s...

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  20. If cos alpha+ cos beta= a, sin alpha+ sin beta= b and alpha- beta= 2 t...

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