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MBD PUBLICATION-TRIGONOMETRIC FUNCTIONS-QUESTION BANK
- Prove that cos80^@+cos40^@-cos20^@=0
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- Prove that 8 sin10^@.sin50^@.sin70^@=1
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- Prove that 4sinAsin(60^@-A)sin(60^@+A)-sin3A=0
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- Prove that tan3A-tan2A-tanA=tan3Atan2AtanA
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- Prove that tan"A/2=sqrt((1-cosA)/(1+cosA)
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- Prove thatsqrt((1+sinA)/(1-sinA))=tan(pi/4+A/2)
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- Prove that (1+tan(A/2))/(1-tan(A/2))=secA+tanA
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- Prove that sectheta+tantheta=tan(pi/4+theta/2)
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- Prove that cot(A/2)=sinA/(1-cosA)
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- Find the maximum value of the 5 sinx+12cosx
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- Find the maximum value of the 24sinx-7cosx
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- Find the maximum value of the 2+3sinx+4cosx
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- Find the maximum value of the 8cosx-15sinx-2
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- If tanA=13/27, tanB=7/20 and A,B are acute, show that A+B =45^@
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- If tantheta=b/a, find the value of acos2theta+bsin2theta
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- If secA-tanA=1/2 and {0ltAlt90^@} then show that secA=5/4
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- If sintheta+sinphi=a and costheta+cosphi=b then show that tan((theta+p...
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- If tantheta=(asinx+bsiny)/(acosx+bcosy) then show that a sin(theta-x)+...
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- If tantheta=(asinx+bsiny)/(acosx+bcosy) then show that a sin(theta-x)+...
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- If A+C=B show that tanA.tanB.tanC=tanB-tanA-tanC
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