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tan2 0^0tan4 0^0tan6 0^0tan8 0^0...

`tan2 0^0tan4 0^0tan6 0^0tan8 0^0`

A

1

B

2

C

3

D

4

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The correct Answer is:
C
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Without using trigonometric tables, evaluate each of the following: (-tanthetacot(90^0-theta)+secthetacos e c(90^0-theta)+sin^2 35^0+sin^2 55^0)/(tan10^0tan20^0tan30^0tan70^0tan80^0)

Evaluate: (sec theta csc(90^(0)-theta)-tan theta cot(90^(0)-theta)+sin^(2)55^(0)+sin^(2)35^(@))/(tan10^(0)tan20^(0)tan60^(@)tan70^(0)tan80^(0))

Evaluate each of the following: (a) cos(40^0-theta)-sin(50^0+theta)+(cos^2 40^0+cos^2 50^0)/(sin^2 40^0+sin^2 50^0) (b) (cos70^0)/(sin20^0)+(cos55^0cos e c35^0)/(tan5^0tan25^0tan45^0tan65^0tan85^0) (c) 2((cos58^0)/(sin32^0))-sqrt(3)((cos38^0cos e c52^0)/(tan15^0tan60^0t a n75^0))

Prove that: tan10^0tan15^0tan75^0tan80^0=1 tan1^0tan2^0tan3^0tan89^0=1 cos1^0cos2^0cos3^0cos180^0=0

value of tan6^0tan42^0tan66^0tan78^0 is equal to - a) 1 b) 2 c) 1/4 d) 1/8

Prove that: tan6^(0)tan42^(0)tan66^(@)tan78^(@)=1

Without using trigonometric tables, evaluate each of the following: (cos^2 20^0+cos^2 70^0)/(sec^2 50^0-cot^2 40^0)+2cosec^2 58^0-2cot58^0tan32^0- 4tan13^0tan37^0tan45^0tan53^0tan77^0

Evaluate :tan7^(0)tan23^(@)tan60^(@)tan67^(0)tan83^(@)

Evaluate : (2sin68^(0))/(cos22^(0))-(2cot15^(0))/(5tan75^(0))-(3tan45^(0)tan20^(@)tan40^(@)tan50^(@)tan70^(@))/(5)

If (xcos e c^2 30^0sec^2 45^0)/(8cos^2 45^0sin^2 60^0)=tan^2 60^0-tan^2 30^0, than x= (a)1 (b) -1 (c) 2 (d) 0

MARVEL PUBLICATION-TRIGONOMETRIC FUNCTIONS OF COMPOUND ANGLES AND FACTORIZATION FORMULAE-MCQs
  1. For any angle A, 4sinA.sin((pi)/(3)-A).sin((pi)/(3)+A)=.....

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  2. cos 20^@.cos 40^@.cos 60^@ cos 80^@=

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  3. tan2 0^0tan4 0^0tan6 0^0tan8 0^0

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  4. (1-tan^(2)(45^(@)-A))/(1+tan^(2)(45^(@)-A)) is equal to

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  5. If (sec8A-1)/(sec4A-1)=tanmA.cotnA, then: (m,n)-=....

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  6. If : sin(alpha//2)cos(alpha//2)=12/25. then: sinalpha=

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  7. If tanalpha=3, calculate : (2 sin 2alpha-3sin2alpha)/(4 sin2alpha+5cos...

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  8. If sinalpha+cosalpha=(1)/(5), find tan((alpha)/(2)).

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  9. If alphaandbeta are two angles in the first quadrant such that sin(alp...

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  10. sqrt(3)cossec2 0^0-sec2 0^0

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  11. The value of tan6^0tan42^0tan66^0tan78^0 is 1 (b) 1/2 (c) 1/4 (d)...

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  12. Statement I : sin^2pi/8+sin^2(3pi)/8+sin^2(5pi)/8+sin^2(7pi)/8=2 State...

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  13. For any angle theta. (sin2theta+sin4theta+sin6theta+sin8theta)/(cos2th...

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  14. cos40+cos80+cos160 +cos 240

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  15. (sin 70^@ + cos 40^@)/(cos 70^@ + sin 40^@)

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  16. If 3sinalpha=5sinbeta, then (tan((alpha+beta)/2))/(tan((alpha-beta)/2)...

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  17. The value of cos52^@+cos68^@+cos172^@ is

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  18. For any angle theta, costheta+cos(120^@+theta)+cos(120^@-theta)=.........

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  19. cos^2theta+cos^2(120^@+theta)+cos^2(120^@-theta)=.....

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  20. If (sin8theta.costheta-sin6theta.cos3theta)/(cos2theta.costheta-sin3th...

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