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If tantheta=sqrt(m), where m is non-squa...

If `tantheta=sqrt(m)`, where m is non-square natural number, then sec `2theta` is

A

A negative number

B

A transcendental number

C

An irrational number

D

A rational number

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The correct Answer is:
A
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PUNEET DOGRA-TRIGONOMETRY-PREV YEAR QUESTIONS
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  2. Value of tan9^@ - tan27^@ - tan63^@ + tan81^@ is ?

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  3. If tantheta=sqrt(m), where m is non-square natural number, then sec 2t...

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  4. If sin 3 A = 1 , then how many distinct values can sin A assume ?

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  5. If sin A+sin B + sin C =3, then the value of cos A + cos B + cos C is

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  6. If sintheta=cos^(2)theta, then what is cos^(2)theta(1+cos^(2)theta) ...

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  7. If tan A - tan B = x and cot B - cot A =y , then what is cot ( A -B) ...

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  8. What is the maximum value of 3cosx+4sinx+5?

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  9. If (1+tantheta)(1+tanphi)=2, then what is (theta+phi) equal to ?

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  10. If tan A=1//2andtanB=1//3, then what is the value of 4A +4B ?

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  11. What is (sinx)/(1+cosx)+(1+cosx)/(sinx) equal to ?

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

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

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

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

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

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

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

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

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

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