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ALLEN-TRIGONOMETRIC RATIOS AND IDENTITIES-All Questions
- Prove that: s inpi/(14)s in(3pi)/(14)s in(5pi)/(14)s in(7pi)/(14)s in(...
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- Which of the following is correct? (A) sin1^@>sin1 (B) sin1^@<sin1 (C)...
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- Find the degrees and radians the angle between the hour hand and the ...
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- One angle of a triangle is (4x)/3 grades and another is 3x degrees, wh...
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- If cos(y-z)+cos(z-x)+cos(x-y)=-3/2, prove that cos x + cos y + cos z =...
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- Prove that 2 sin^2 beta + 4 cos(alpha + beta) sin alpha sin beta + co...
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- For all value of alpha,beta,gamma prove that ,cosalpha+cosbeta+cosgamm...
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- If cos(alpha+beta)=4/5; sin(alpha-beta)=5/13 and alpha,beta lie betwee...
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- sin^4(pi/16)+sin^4(3pi/16)+sin^4(5pi/16)+sin^4(7pi/16)=3/2
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- If costheta=(cosalpha-e)/(1-e cosalpha),\ prove that tantheta/2=+-sqr...
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- Prove that, cot 7 1/2 ^@ or tan 82 1/2 ^@ = (sqrt(3)+sqrt(2))(sqrt(2)+...
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- Prove that : cosec theta + cosec 2 theta + cosec 2^2 theta +.............
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- Find the maximum & minimum values of 27^(cos2x). 81^(s in2x)
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- Find the smallest positive values of xa n dy satisfying x-y=pi/4a n dc...
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- if m*tan(theta-30)=n*tan(theta+120), show that cos2theta=(m+n)/(2(m-n)...
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- If the value of the expression sin 25^@* sin 35^@* sin 85^@ can be exp...
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- Prove that (4cos^2 9^0-3)(4cos^2 27^0-3)=tan9^0dot
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- Let P(k)=(1+cospi/(4k)) (1+cos((2k-1)pi)/(4k)) (1+cos((2k+1)pi)/(4k))...
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- If (1+t a n1^0)dot(1+t a n2^0)dot(1+t a n3^0)(1+tan45^0)=2^n , then ' ...
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- Prove that in an acute triangle ABC, the least values of Sigma secA an...
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