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A DAS GUPTA-Circular Functions, Identities -Exercise
- The numerical value of (where i = sqrt-1) (cos pi/10 + i sin pi/10)(c...
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- The numerical value of cot^(2)36^circ* cot^(2)72^circ =.
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- The numerical value of sin 12^circ* sin 48^circ* sin 54^circ= .
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- If sin 54^circ = 1/2 + sin theta, 0 lt theta lt pi/2, then theta = .
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- The numerical value of tan 225^circ *cot 405^circ + tan 765^circ* cot...
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- The numerical value of cos 2pi/7 + cos 4pi/7 + cos 6pi/7 is=........
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- If (1 + sin 2x)/(1- sin2x) = tan^(2) *(alpha +x) for all x then the ...
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- If cos(x -y), cos x and cos(x + y) are in HP then cos x* sec (y/2)= .
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- If A, B, C are in AP and B = pi/4 , then tan A *tan B*tan C = .
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- If p in (0, pi) then the set of values of p for which sin p* cos^(3) ...
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- sec^(2)theta = frac{4xy}{(x+y)^(2)} is true if and only if
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- If cos theta + sec theta = 2 then cos^(n)theta+ sec^(n)theta is equal ...
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- If alpha = theta1 +theta2 and x = theta1 -theta2 and tan theta1 = lamb...
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- If ABCD is a cyclic quadrilateral then cos A + cos B + cos C + cos D ...
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- tan 40^@ + 2tan 10^@ is equal to
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- If cos(alpha + gamma)/cos(alpha - gamma) = cos 2beta then tan alpha, t...
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- The value of sqrt3 cosec 20^circ - sec 20^circ is equal to
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- The number of real values of x for which sin(e^x) = 5^(x)+5^(-x) is
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- If cot y= (sin x- sin z)/(cos z- cos x) then which of the following ...
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- What is the real part of ( sin x + icos x )^(3), where i= sqrt( -1) ?
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