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Are the following functions r even or od...

Are the following functions r even or odd? (i)`cos^2 x +2cosx + 3`

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The correct Answer is:
`pi/3`
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PREMIERS PUBLISHERS-TRIGONOMETRY-SOLUTION TO EXERCISE 3.8
  1. Find the general solution of the following: (iv)sintheta=-1/2

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  2. Find the principal solution and general solutions : cot theta = sqrt(3...

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  3. Find the principal solution and general solutions : tan theta = (-1)/(...

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  4. Solve the equations for which solution lies in the interval 0^(@) lt t...

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  5. Solve the equations for which solution lies in the interval 0^(@) lt t...

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  6. Solve the equations for which solution lies in the interval 0^(@) lt t...

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  7. Solve the equations for which solution lies in the interval 0^(@) lt t...

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  8. Solve the equations: sin 5x - sin x = cos 3x

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  9. Solve the equations: 2 cos^(2) theta + 3 sin theta - 3 = 0

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  10. Solve the equations: cos theta + cos 3theta = 2 cos 2theta

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  11. Solve the equations: sin theta + sin 3theta +sin 5 theta = 0

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  12. Solve the equations: sin 2theta - cos 2 theta - sin theta + cos thet...

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  13. Solve the following equations : (vi)sintheta +costheta =sqrt2

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  14. Solve sintheta + sqrt3 costheta =1

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  15. Solve the equations: cot theta + cosec theta = sqrt(3)

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  16. Solve the equations: tan theta + tan (theta + (pi)/(3)) + tan (theta...

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  17. Solve the equations: cos 2theta = (sqrt(5) + 1)/(4)

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  18. Are the following functions r even or odd? (i)cos^2 x +2cosx + 3

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