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If y = sec^2 theta+ cos^2 theta, theta n...

If `y = sec^2 theta+ cos^2 theta, theta ne 0`, then :

A

y=0

B

`yle2`

C

`yge-2`

D

y > 2.

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MODERN PUBLICATION-TRIGNOMETRY-EXERCISE
  1. In a triangle ABC, 2ca sin frac(A-B+C)(2)=

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  2. The period of sin^2 theta is :

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  3. If y = sec^2 theta+ cos^2 theta, theta ne 0, then :

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  4. If alpha is a root of 25 cos^2 theta+ 5 cos theta- 12 = 0,pi/2 < alpha...

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  5. If sin (alpha+beta)=1, sin (alpha-beta)=1/2, then tan (alpha+ 2beta). ...

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  6. In a triangle ABC, tan frac (A)(2)=5/6, tan frac (C)(2)=2/5, then :

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  7. The equation a sin x + b cos x = c, where |c| > sqrt (a^2 +b^2) has :

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  8. In a triangle ABC, a = 4, b=3, angle A = 60^@, then c is the root of t...

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  9. If in a triangle, a cos ^(2)""C/2+c cos ^(2)""A/2=(3b)/(2), then its s...

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  10. The angles of a triangle are in the ratio 4: 1: 1, then the ratio of t...

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  11. If u=sqrt(a^2 cos^2 theta + b^2sin^2theta)+sqrt(a^2 sin^2 theta + b^2 ...

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  12. If alpha, beta be such that pi < alpha- beta < 3 pi. If sin alpha +sin...

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  13. If theta and phi are acute angles, sin theta=1/2, cos phi= 1/3, then t...

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  14. The sides of a triangle, sin alpha, cos alpha and sqrt(1+ sin alpha co...

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  15. If the angle opf a triangle are in the ratio 1:2:3, then show that the...

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  16. If in Delta ABC, the altitudes from the vertices A, B and C on opposit...

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  17. if cos(alpha-beta)=1a n dcos(alpha+beta)=l/e , where alpha,betamu in [...

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  18. The number of solutions of the pair of equations: 2 sin^2 theta- cos 2...

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  19. If p and q are positive real numbers such that p^2+ q^2=1, then the m...

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  20. If sin^-1(x/5) + cosec^-1(5/4)= pi/2, then a value of x is

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