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OBJECTIVE RD SHARMA-TRIGONOMETRIC RATIOS AND IDENTITIES-Chapter Test
- If cos alpha+cos beta=0=sin alpha+sinbeta, then cos2alpha+cos 2beta=
02:43
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- If sin beta is the GM between sin alpha and cos alpha, then cos 2beta...
03:06
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- tan""(2pi)/(5)-tan""(pi)/(15)-sqrt3tan""(2pi)/(5)tan""(pi)/(15) is equ...
01:48
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- If sinB=1/5sin(2A+B), then (tan(A+B))/(tanA) is equal to
01:55
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- (sin7theta+6sin5theta+17sin3theta+12sintheta)/(sin6theta+5sin4theta+12...
10:08
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- If (cos(theta(1)-theta(2)))/(cos(theta(1)+theta(2)))+(cos(theta(3)+the...
05:30
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- (1+cos56^(@)+cos58^(@) -cos66^(@))/(cos28^(@)cos29^@sin33^(@)) =
04:07
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- alpha and beta are acute angles and cos2alpha = (3cos2beta-1)/(3-cos2b...
03:00
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- If cosectheta=(p+q)/(p-q),then cot(pi,//4+theta//2)=
06:10
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- If sinalpha+sin beta=a and cos alpha+cos beta=b,then sin(alpha+beta)=
05:27
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- If cos(alpha+beta)=4/5, sin(alpha-beta)=5/13and alpha, beta between 0 ...
03:08
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- The vlaue of cos^(2)76^(@)+cos^(2)16-cos76^(@)cos16^(@),is
03:11
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- The value of sum(k=1)^(3) cos^(2)(2k-1)(pi)/(12), is
05:51
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- If (a^(2)+1)/(2a)=costheta, then (a^(6)+1)/(2a^(3))=
02:04
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- The value of (1)/(cos290^(@))+(1)/(sqrt3sin250^(@)) is equal to
03:28
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- If tan alpha=(1+2^(-x))^(-1), tan beta=(1+2^(x+1))^(-1) then alpha+bet...
03:29
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- A and B are positive acute angles satisfying the equations 3cos^(2)A...
04:33
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- If T(n)=cos^(n)theta+sin ^(n)theta, then 2T(6)-3T(4)+1=
07:04
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- The maximum value of 1+8sin^(2)x^(2)cos^(2)x^(2) is
01:51
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- Let thetain(0,pi//4)and t(1)=(tantheta)^(tantheta), t(2)=(tantheta)^(...
02:59
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