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ALLEN-TRIGONOMETRIC RATIOS AND IDENTITIES-All Questions
- In any triangle A B C ,\ sin A-cos B=cos C ,\ the angle\ B is a.pi...
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- If A+B+C=(3pi)/2 , then cos2A+cos2B+cos2C is equal to a.1-4cos Acos...
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- Prove that 5costheta+3cos(theta+pi/3)+3 lies between -4 and 10.
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- The maximum value of 1+sin(pi/4+theta)+2cos(pi/4-theta) for real value...
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- Prove that t a n A+2t a n2A+4t a n4A+8cot8A=cot Adot
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- sum(r=1)^(n-1)cos^2((rpi)/n)
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- Prove that: (1+sec2theta)(1+sec4theta)(1+sec8theta)(1+sec2^ntheta)=t a...
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- To find sum of tangents of a series of angles, the angles being in Ari...
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- S=cosecx+cosec 2x+cosec 4x+…+cosec 2nx=cot(x/2)−cot2nx
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- The expression (tan(x-pi/2)cos((3pi)/2+x)-sin^3((7pi)/2-x))/(cos(x-pi/...
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- The values of cos^2 73^0+cos^2 47^0-sin^2 43^0+sin^2 107^0 is equal t...
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- The expression (sin 22^0cos8^0+cos 158^0cos98^0)/(sin 23^0cos7^0+cos 1...
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- The two legs of a right triangle are sin theta +sin ((3pi)/2-theta) an...
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- If tantheta=sqrt(a/b)where a , b are positive reals then the value o...
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- The expression (sin(alpha+theta)-"sin"(alpha-theta))/(cos(beta-theta)-...
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- (The tangents of two acute angles are 3 and 2, The sine of twice their...
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- Exact value of cos 20^0+2sin^2\ \ 55^0-sqrt(2)sin65^0\ is- a.1 b. 1/(...
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- If cos(theta+phi)=mcos(theta-phi) ,then tantheta is equal to a.((1+m)...
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- If sintheta+cosectheta=2 , then the value of sin^8theta+cosec^8theta i...
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- If the expression 4sin5alphacos3alphacos2alpha s expressed as the ...
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