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MBD PUBLICATION-TRIGONOMETRIC FUNCTIONS-QUESTION BANK
- Prove that(cos9^@+sin9^@)/(cos9^@-sin9^@)=tan54^@
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- Prove the tan10^@+tan35^@+tan10^@.tan35^@ = 1
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- Prove that cot2A=(cot^2A-1)/(2cotA)
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- Prove that sinB/sinA=sin(2A+B)/sinA-2cos(A+B)
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- Prove that (sin2A+sin2B)/(sin2A-sin2B)=tan(A+B)/tan(A-B)
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- Prove that (cotA-tanA)/(cotA+tanA)=cos2A
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- Prove that (sin2A+sin5A-sinA)/(cos2A+cos5A+cosA)=tan2A
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- Prove that cotA-tanA=2cot2A
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- Prove that cotA-cosec2A=cot2A
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- Prove that (cosA-sinA)/(cosA+sinA)=sec2A-tan2A
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- Prove that tantheta(1+sec2theta)=tan2theta
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- Prove that(sinA+sinB)/(sinA-sinB)=tan((A+B)/2).cot((A-B)/2)
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- Prove that sin50^@-sin70^@+sin10^@=0
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- 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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