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If `x=sintheta+costhetaandy=sintheta.costheta`, then what is the value of `x^(4)-4x^(2)y-2x^(2)+4y^(2)+4y+1`?

A

0

B

1

C

2

D

None of these

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A
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PUNEET DOGRA-TRIGONOMETRY-PREV YEAR QUESTIONS
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  2. What is (sinx)/(1+cosx)+(1+cosx)/(sinx) equal to ?

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  3. What is the value of tan 15^(@).tan195^(@)?

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  4. Angle a is divided into two parts A and B such that A - B = x and tan ...

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  5. If x=sintheta+costhetaandy=sintheta.costheta, then what is the value ...

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  6. What is the value of sin 292(1)/(2)""^@?

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  7. What is the value of (sintheta+costheta-tantheta)/(sectheta+"cosec"-co...

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  8. What is the value of sin 15^@. sin 75^@?

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  9. What is (sin theta+1)/(cos theta) equal to?

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  10. If =sec^(2)theta+cos^(2)theta, where 0ltthetalt(pi)/(2), then whic...

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  11. The value of sin50^(@)-sin70^(@)+sin10^(@) is

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  12. What is ((sec18^(@))/(sec144^(@))+("cosec"18^(@))/("cosec"144^(@))) e...

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  13. One of the angles of a triangle is 1//2 radian and the other is 99^(@...

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  14. Which one of the following is correct?

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  15. If cos x ne -1. then what is (sinx)/(1+cosx) equal to?

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  16. What is the value of (1+tan15^(@))/(1-tan15^(@))?

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  17. If angles A, B and C are in AP, then what is sin A + 2 sin B + sin C e...

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  18. What is tan(7(1)/(2))^(@) equal to ?

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  19. What angle A lies in the third quadrant and it satisfies the equation...

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  20. What is the value of (cos15^(@)+cos45^(@))/(cos^(3)15^(@)+cos^(3)45^(...

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