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V PUBLICATION-TRIGNOMETRC FUNCTIONS-QUESTION BANK
- Prove that sin^2(pi/6)+cos^2(pi/3)-tan^2(pi/4)=-1/2
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- Prove that 2sin^2(pi/6)+cosec^2((7pi)/6)cos^2(pi/3)=3/2
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- Prove that cot^2(pi/6)+cosec((5pi)/6)+3tan^2(pi/6)=6
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- Prove that 2sin^2((3pi)/4)+2cos^2(pi/4)+2sec^2(pi/3)=10
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- Find the value of sin 75^@
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- Find the value of the following: tan 15^@
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- Prove that cos(pi/4-x)cos(pi/4-y)-sin(pi/4-x)sin(pi/4-y)=sin(x+y)
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- prove that (tan(pi/4+x))/(tan(pi/4-x))=((1+tanx)/(1-tanx))^2
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- Prove that (cos(pi+x)cos(-x))/(sin(pi-x)cos(pi/2+x)=cot^2x
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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 sin(n+1)xsin(n+2)x+cos(n+1)xcos(n+2)x=cosx
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- Prove that cos((3pi)/4+x)-cos((3pi)/4-x)=-sqrt2 sinx
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- prove the following sin^2 6x-sin^2 4x =sin2xsin10x
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- Prove that cos^2 2x-cos^2 6x=sin4x sin8x
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- Prove that sin 2 x+2 sin 4 x+sin 6 x=4 cos ^(2) x sin 4 x
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- Prove that cot 4 x(sin 5 x+sin 3 x)=cot x(sin 5 x-sin 3 x)
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- Prove that (cos 9 x-cos 5 x)/(sin 17 x-sin 3 x)=-(sin 2 x)/(cos 10 x...
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- Prove that (sin 5 x+sin 3 x)/(cos 5 x+cos 3 x)=tan 4 x
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- Prove that (sinx-siny)/(cosx+cosy)=tan(x-y)/2
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- Prove that (sin x+sin 3 x)/(cos x+cos 3 x)=tan 2 x
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