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ICSE-TRIGONOMETRICAL IDENTITIES-QUESTIONS
- Prove that : (1 + cot A)^(2) + (1 - cot A)^(2) = 2 cosec^(2) A
01:38
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- Prove that : tan^(4) A + tan^(2) A = sec^(4) A - sec^(2) A
01:31
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- Prove that : (sin A)/ (1 + cos A) + (1 + cos A)/ (sin A) = 2 cosec A
02:28
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- Prove that : (1 + cos A)/(1 - cos A) = (cosec A + cot A)^(2)
05:14
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- Prove that : (cot A + tan B)/ (cot B + tan A) = cot A tan B
03:15
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- Prove that : (cos A cot A)/ (1 - sin A) = 1 + cosec A
02:22
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- Prove that : (sec A - tan A)/ (cosec A + cot A) = (cosec A - cot A)/...
02:33
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- Prove that : sqrt ((1 - sin A)/(1 + sin A)) = sec A - tan A
02:35
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- Prove that : (tan A + sec A - 1)/ (tan A - sec A + 1) = (1 + sin A)/...
08:12
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- Prove that : (cos A)/ (1 - tan A) + (sin A)/ (1 - cot A) = cos A + s...
03:51
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- Prove that : (1 + tan^(2) A) + (1 + (1)/ (tan^(2) A)) = (1)/ (sin^(2...
04:16
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- If tan A + sin A = m and tan A - sin A = n, prove that : m^(2) -...
06:05
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- If x = a sec A cos B, y = b sec A sin B and z = c tan A, show that...
03:59
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- Find the value of x, if : cos x = cos 60^(@) cos 30^(@) + sin 60^(@)...
02:19
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- Given: cos 38^(@)sec(90^(@)-2A)=1, find the value of angle A.
01:30
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- Find : sin 36^(@) 51'
01:14
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- Find : tan 53^(@) 38'
01:22
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- Find : cos 62^(@) 27'
02:57
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- Find 0, if sin 0 = 0.5798
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- Use tables to find, 0 if : tan 0 = 0.8516
02:03
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