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2sin^2(30^@) - 3cos^2(45^@)+tan^2(60^@)...

`2sin^2(30^@) - 3cos^2(45^@)+tan^2(60^@)`

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Find the value of (sin30^(@))/(cos^(2)45^(@))-tan^(2)60^(@)+3cos90^(@)+sin0^(@) .

3sin^(2)30^(@)+2cos^(2)45^(@)+3tan^(2)60^(@)=

The value of sin^(2)30^(@).cos^(2)45^(@)+2tan^(2)30^(@)-sec^(2)60^(@) is equal to :

(5sin^(2)30^(@)+cos^(2)45^(@)-4tan^(2)30^(@))/(2sin30^(@).cos30^(@)+tan45^(@))=?

Find the value of : (5sin^(3)30^(@)+cos^(2)45^(@)-4tan^(2)30^(@))/(2sin 30^(@).cos30^(@)+tan45^(@))+cos 0^(@)

Find the value of the following: (i) "sin"^(2)30^(@)+"sin"^(2)45^(@)+"sin"^(2)60^(@)+"sin"^(2)90^(@) (ii) 2"sin"^(2)30^(@)-3cos^(2)45^(@)+cos^(2)60^(@)

If x sin45^(@)cos^(2)(60^(@))=(tan^(2)(60^(@))cos es0^(@))/(sec45^(@)cot^(2)(30^(@)))

Find the value of : 2sin^(2)[30^(@)]-3cos^(2)[30]^(@)+tan^(2)[60]^(@)+3sin^(2)[90]

VK GLOBAL PUBLICATION-INTRODUCTION TO TRIGONOMETRY-PROFICIENCY EXERCISE (SHORT ANSWER QUESTIONS-II)
  1. Evaluate the equation ;- cos 90^(@) sin 0^(@) - sin 0^(@) cos 90^(@...

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  2. Evaluate the (cos 60^(@) - cot 45^(@) + "cosec" 30^(@))/(sec 60^(@...

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  3. 2sin^2(30^@) - 3cos^2(45^@)+tan^2(60^@)

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  4. Evaluate the cot^(2) 30^(@) - 2 cos^(2) 60^(@) - (3)/(4) sec^(2) 45...

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  5. Evaluate the (tan^(2) 60^(@) + 4 cos^(2) 45^(@) + 3 sec^(2) 30^(@) ...

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  6. Evaluate the (tan 45^(@))/("cosec" 30^(@)) + (sec 60^(@))/(cot 45^(...

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  7. Evaluate the equation:- (sec 70^(@))/("cosec" 20^(@)) + (sin 59^(@)...

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  8. Show that tan48^(@) tan 23^(@) tan 42^(@) tan 67^(@) =1.

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  9. Prove that : (i) (sin 70^@)/(cos 20^@)+(cosec 20^@)/(sec 70^@)-2cos ...

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  10. Evaluate : cos e c(65^0+theta)-sec(25^0-theta)-tan(55^0-theta)+cot(...

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  11. Evaluate the ((3 cos 43^(@))/(sin 47^(@)))^(2) - (cos 37^(@) "cosec...

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  12. If sec 2A=cosec (A-42^@), where 2A is an acute angle, find the value o...

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  13. If sin (A - B) = 0 , cos (A + B) = 0, 0^(@) lt A + B le 90^(@), find...

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  14. If tan (A + B) = sqrt(3) and tan (A - B) = 0, 0^(@) lt A + B le 90^(@...

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  15. Prove : ( 1+ tan^2 theta )(1 + sin theta )(1 - sin theta) = 1.

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  16. If sin theta+cos theta=sqrt3, then prove that tan theta+cot theta=1

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  17. .If alpha+beta=90^(@), show that sqrt(cos alpha*csc beta-cos alpha*sin...

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  18. If tan theta =a/b, prove that (a sin theta- b cos theta)/(a sin theta+...

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  19. If sectheta=5/4 , find the value of (sintheta-2costheta)/(tantheta-...

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  20. If theta=30o , verify that: (i) tan2theta=(2tantheta)/(1-tan^2theta...

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