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The value of (tan 80^@ - tan 10^(@))/( t...

The value of `(tan 80^@ - tan 10^(@))/( tan 70^(@))`

A

0

B

1

C

2

D

3

Text Solution

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The correct Answer is:
C
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AAKASH SERIES-COMPOUND ANGLES-PRACTICE SHEET (EXERCISE - I) LEVEL - I
  1. If A = sin 45^(@) + cos 45^(@) and B= sin 44^(@) + cos44^(@), then:

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  2. If tan(x+pi/4)=a, then sec^(2)x=

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  3. The value of (tan 80^@ - tan 10^(@))/( tan 70^(@))

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  4. If tan(pi cos theta)=cot(pi sin theta), 0 lt theta lt (3pi)/(4) then s...

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  5. If tan(picostheta)=cot(pisintheta), then prove that cos(theta-(pi)/(4...

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  6. If (1 + tan alpha) (1 + tan 4 alpha) = 2, alpha in (0, (pi)/(16)), the...

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  7. Let f(theta)=(cot theta)/(1+cot theta) and alpha+beta = (5pi)/(4), the...

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  8. In any triangle ABC, sin^(2)A-sin^(2)B+sin^(2)C is always equal to

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  9. In Delta ABC, if cos^2 A+ cos^2 B+cos^2 C=1, then the triangle is

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  10. If cos (A-B)=3//5 and tan A tan B=2 , then which one of the following...

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  11. In triangle ABC, if sin A cos B = (1)/(4) and 3 tan A = tan B, then co...

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  12. If cos 28^(@)+sin 28^(@)=k^(3), then cos17^(@) equal to

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  13. If (x)/( cos theta ) = (y) /( cos (theta - 2pi//3))=(z)/( cos ( theta ...

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  14. If cos alpha+cos beta=0=sin alpha+sin beta, then cos 2 alpha+cos 2beta...

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  15. Let f(n)=2 cos nx AA n in N, then f(1)f(n+1)-f(n) is equal to

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  16. "tan"^(6) (pi)/(9)-33 "tan"^(4)(pi)/(9) +27 "tan"^(2)(pi)/(9)=

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  17. If (cosx)/(cosy)=2 and cos (x-y)=(sqrt(3))/(2) then tan y=

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  18. If tan beta = 2 sin alpha sin gamma " cosec "(alpha + gamma) , then ...

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  19. Assertion (A): tan40^(@) + tan 80^(@) - sqrt(3)tan 40^(@) tan80^(@)=-s...

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  20. Statement-I : If 0 lt alpha, beta lt pi/4, sin alpha =a/sqrt(1+a^(2)),...

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