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For what value of theta, is (tan theta +...

For what value of `theta`, is `(tan theta + cosec theta) = 2.5` where `0 lt theta le 90^(@)` ?

A

`30^(@)`

B

`45^(@)`

C

`60^(@)`

D

`90^(@)`

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The correct Answer is:
A
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LUCENT PUBLICATION-TRIGONOMETRIC RATIO OF SPECIFIC ANGLES-Exercise 10A
  1. The value of cosec^(2) theta -2 + sin^(2) theta is always

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  2. If cot theta = (2xy)/(x^(2) - y^(2)), then what is cos theta equal to ...

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  3. For what value of theta, is (tan theta + cosec theta) = 2.5 where 0 lt...

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  4. If 0ltthetaltphilt90^(@) then which one of the following is true ?

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  5. If tantheta=(2t)/(1-t^(2)) then sin theta+cos theta equals

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  6. If 0 le theta lt pi/2 and p= ssec^(2)theta then which one of the follo...

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  7. In a triangle ABC, angleABC = 90^(@), angleACB = 30^(@), AB= 5 cm. Wha...

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  8. If 0 le theta lt pi/2 and costheta + sqrt(3) sin theta =2, then what ...

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  9. Suppose ABC is a right angled triangle with right angled at C . If len...

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  10. ABC is a right triangle with right angle at A. If the value of tan B =...

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  11. If alpha is an acute angle and sinalpha = sqrt((x-1)/(2x)), then what ...

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  12. If theta is in first quadrant and costhetage(1)/(2) then which one of ...

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  13. What is the value of cos1^(@) cos2^(@)cos3^(@).....cos270^(@) ?

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  14. IF A=pi//6 and B=pi//3 then which of the following is/are correct? 1...

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  15. If sin17^(@)=(a)/(b) then value of sec17^(@)-sin73^(@) is

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  16. Assume the Earth to be a sphere of radius R. What is the radius of the...

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  17. If (cosectheta+sintheta)/(cosectheta-sintheta)=(5)/(3) and 0^(@)ltthet...

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  18. Choose the correct statement :

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  19. Given below are respectively base and hypotenuse of four right angle t...

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  20. Consider the following statements about the expression sin^(3)theta+2s...

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