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sin^(2)Acos^(2)B-cos^(2)A sin^(2)B simpl...

`sin^(2)Acos^(2)B-cos^(2)A sin^(2)B` simplifies to :

A

`sin^2A+sin^2B`

B

`cos^2A+cos^2B`

C

`sin^2A-sin^2B`

D

`sin^2A+cos^2B`

Text Solution

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The correct Answer is:
C
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QUANTUM CAT-TRIGONOMETRY-QUESTION BANK
  1. cos^6A+sin^6A is equal to:

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  2. If secx=P, cosecx=Q, then:

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  3. sin^(2)Acos^(2)B-cos^(2)A sin^(2)B simplifies to :

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  4. If sin2x=n sin 2y, then the value of (tan(x+y))/(tan(x-y)) is :

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  5. The least value of 3sin^2theta+4cos^2theta is:

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  6. The value of cot(180+theta)cot(90-theta) is:

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  7. logtan1^@+logtan2^@+.....+logtan89^@ is :

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  8. If we convert sin(-566^(@)) to same trigonometrical ratio of a positiv...

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  9. From the Masthead of a ship, the angle of Depression of boat is 60^@, ...

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  10. some portion of a 30m long tree is broken by tornado and the top struc...

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  11. Two posts are 25 m and 15 m high and the line joining their tips makes...

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  12. The angle of elevation of the top of a tower at a point G on the groun...

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  13. If x=sectheta-tantheta, y=sectheta+tantheta, then the relation between...

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  14. The value of theta for which sqrt3costheta+sintheta=1 is:

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  15. If cottheta=3/4, then the value of sqrt((1+costheta)/(1-costheta)) is:

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  16. If the arcs of the same length in two circles subtend angles of 60^(@)...

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  17. In the third quadrant, the values of sintheta and costheta are:

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  18. The value of (cot50^@)/(tan40^@)-1/2 cos55^@/sin35^@ is:

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  19. The value of theta(0 lt a lt pi/2) satisfying the equation sin^2theta...

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  20. If costheta=4/5 and 0ltthetalt90^@, then the value of (3costheta+2cose...

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