prove
Asked by Sonal13
| 12th Jun, 2009,
04:27: PM
Expert Answer:
sec^4A(1+sin^4A)-2tan^2A = 1
(1+tan2A)2+tan4A-2 tan2A=1
1+tan4A+2tan2A+tan4A-2 tan2A=1
2 tan4A=0
tanA=0
A=nΠ
Answered by
| 13th Jun, 2009,
06:57: PM
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