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If sin theta(1)sin theta(2)-cos theta(1)...

If `sin theta_(1)sin theta_(2)-cos theta_(1)cos theta_(2)+1=0`, then the value of `tan(theta_(1)//2)cot(theta_(1)//2)` is equal to

A

`-1`

B

1

C

2

D

`-2`

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A
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AAKASH SERIES-COMPOUND ANGLES-LECTURE SHEET (EXERCISE - I)
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  9. If tan alpha, tan beta are the roots of the equation x^(2)+px+q=0 the...

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  10. If sec theta + tan theta=1, then root of the equation (a-2b+c)x^(2) + ...

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  11. If tan alpha is equal to the integral solution of the inequality 4x^(2...

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  12. If A+B+C=(pi)/2, " then " sum (cos (B+C))/(cos B cos C)=

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  15. Let (sin(theta-alpha))/(sin(theta-beta))=(a)/(b) and (cos(theta-alpha)...

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  16. If (tan(alpha + beta - gamma))/(tan(alpha - beta + gamma)) = (tan gamm...

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  17. If A, B, C are the angles of a triangle such that "cot"(A)/(2)="3 tan"...

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  19. Let 0lt x lt pi//4, then (sec2x-tan2x) equals

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  20. Which of the following number(s) is/are rational ?

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