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ICSE-TRIGONOMETRICAL IDENTITIES-EXERCISE 21 (B)
- Prove that : (cos A)/ (1 - tan A) + (sin A)/ (1- cot A) = sin A + co...
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- Prove that : (cos^(3) A + sin^(3) A)/ (cos A + sin A) + (cos^(3) A -...
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- Prove that : (tan A)/ (1 - cot A) + (cot A)/ (1 - tan A) = sec A cos...
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- Prove that : (tan A + (1)/ (cos A))^(2) + (tan A - (1)/ (cos A))^(2)...
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- Prove that : 2 sin^(2) A + cos^(4) A = 1 + sin^(4) A
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- Prove that : (sin A - sin B)/ (cos A + cos B) + (cos A - cos B)/ (si...
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- Prove that ( "cosec" A - sin A)(sec A- cos A)=(1)/((tan A+ cot A)).
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- Prove the identity: (1+tanAtanB)^2+(tan"A"-tan"B")^2=sec^2Asec^2B
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- Prove that : (1)/ (cos A + sin A - 1) + (1)/ (cos A + sin A + 1) = c...
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- If x cos A + y sin A = m and x sin A - y cos A = n, then prove tha...
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- If m = a sec A + b tan A and n = a tan A + b sec A, then prove th...
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- If x = r sin A cos B, y = r sin A sin B and z = r cos A, then prov...
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- If sin A + cos A = p and sec A + cosec A = q , then prove that : ...
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- If x = r cos A cos B, y = r cos A sin B and z = r sin A, show that...
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- If (cosalpha)/(cosbeta)=m and (cosalpha)/(sinbeta)=n show that (m^2+n^...
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