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If A = 30 , verify that: cos 2A = 1− tan^2A/ 1+ tan^2A
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Dec 19, 2018
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Class 10
by
kratos
If A = 30 , verify that:
cos 2A = 1− tan2A/ 1+ tan2A
class-10
t- ratios of angles
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answered
Mar 1, 2021
by
kratos
Best answer
A = 30
⇒ 2A = 2 × 30 = 60
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