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Maximum and minimum value of sin^(2)(120...

Maximum and minimum value of `sin^(2)(120^(@) + theta ) + sin^(2) (120^(@) - theta ) ` are

A

max=3/2, min=1/2

B

max=1/2 , min=0

C

max=3/2, min=0

D

max=3/2, min=1/3

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The correct Answer is:
A
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DIPTI PUBLICATION ( AP EAMET)-TRIGONOMETRIC RATIOS AND IDENTITIES -EXERCISE 1 G ( VARIATION IN TRIGONOMETRIC FUNCTIONS )
  1. The maximum value of sin^(2)""((pi)/(3) + pi) +sin^(2)""((pi)/3-x) is

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  2. The minimum value of cos^(2)((pi)/3-x)-cos^(2)((pi)/3+x) is

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  3. Maximum and minimum value of sin^(2)(120^(@) + theta ) + sin^(2) (120^...

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  4. The minimum of cos^(2)(120^(@) + x)+ cos^(2) (120^(@) -x) is

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  5. The maximum value of cos^(2)(pi//4-x)+(sinx-cosx)^(2) is

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  6. Minimum value of cos^(2)(pi//4+x)+(sin x-cos x)^(2) =

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  7. The minimum value of 5 cos theta + 3 cos ( theta + pi//3) + 3 is

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  8. The maximum of 5 cos x + 3 cos ( x-60^(@)) + 7 is

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  9. The minimum value of 5 cos x + 3 cos (x+pi//3) +8 is

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  10. For all values of theta , the values of 3- cos theta + cos ( theta +...

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  11. Maximum value of sin x cos (pi//4-x) is

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  12. The minimum value of cos^(3) x+ cos^(3) (120^(@) + x) + cos^(3) (120^...

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  13. ("Minimum of "(sin^(2) x+ cos^(2)x))/("Maximum of " [sin^(2) (3x//2)+c...

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  14. For x in R , 3 cos (4x-5) +4 lies in the interval

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  15. The range of 8 cos theta - 15 sin theta is

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  16. If A= cos theta + 2 sqrt(2) sin theta , then for all real values of t...

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  17. If y=1+4sin^2 x cos^(2) x , then

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  18. The value of cos theta + 3sqrt(2) sin ( theta + pi//4) + 6 lies betw...

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  19. If f(x)=sin^(6) x + cos^(6) x for x in R , then f(x) lies in the int...

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  20. Minimum value of 4 tan x + 9 cot x is

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