Recommended Questions
- Prove the following:4cosxcos(pi/3+x)cos(pi/3-x)=cos3x
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- Prove that cos^2x+cos^2(x+pi/3)+cos^2(x-pi/3)=3/2.
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- Prove that cos x+cos((2 pi)/(3)-x)+cos((2 pi)/(3)+x)=0
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- Prove that: cos((3pi)/2+x)cos(2pi+x){cot((3pi)/2-x)+"cot"(2pi+x)}=1
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- Prove that cos^2x+cos^2(x+pi/3)+cos^2(x-pi/3)=3/2
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- Prove that: cos((3pi)/4+x)-cos((3pi)/4-x)=-sqrt(2)sinx
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- सिध्द कीजिए। cos^(2) +cos^(2) (x+ .(pi)/(3)) +cos^(2) (x-.(pi)/(3))...
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- सिद्ध कीजिए की : cos ^(2) x +cos ^(2) (x+( pi)/(3)) +cos^(2) (x-( p...
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- Prove that cos ^(2) x+ cos ^(2) (x+ ( pi )/( 3)) +cos ^(2) (x- (pi)/(...
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