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ALLEN-COMPOUND ANGLES-EX-S1
- Prove that : cos^2alpha+cos^2(alpha+beta)-2cosalphacosbetacos(alpha+be...
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- prove that : tan(alpha)+2 tan(2alpha) +4(tan4alpha)+8cot(8alpha) = cot...
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- If x=sin(theta+(7pi)/(12))+sin(theta+pi/(12))+sin(theta+(3pi)/(12))dot...
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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 cos(alpha+beta)=4/5; sin(alpha-beta)=5/13 and alpha,beta lie betwee...
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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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- If A+B+C=pi then prove that sum(tanA/(tanBtanC))=sumtanA-2sum cotA
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- If alpha + beta = gamma prove that cos^2 alpha+ cos^2 beta+cos^2gamma...
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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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- Calculate without using trigonometric tables:
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- Given that (1+tan1^@)(1+tan2^@)+...........+(1+tan45^@)= 2^n find n .
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- In a right angled triangle, acute angle A and B satisfy tanA+tanB+tan^...
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