is cos 2 theta= 1-tan^2 theta÷ 1+tan^2 theta? how
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heya☺☺
yes sure, cos2¢=1-tan^2¢/1-tan^2¢
from lhs
◆
Cos2¢=cos^2¢-sin^2¢/1
=)cos^2¢-sin^2¢/cos^2¢+sin^2¢【1=sin^2¢+cos^2¢】 we can write.
now, dividing by' cos^2¢ 'In numerator and denominator.
=) 1-tan^2¢/1+tan^2¢ Rhs .proove.
hope it help you
@rajukumar☺☺☺
yes sure, cos2¢=1-tan^2¢/1-tan^2¢
from lhs
◆
Cos2¢=cos^2¢-sin^2¢/1
=)cos^2¢-sin^2¢/cos^2¢+sin^2¢【1=sin^2¢+cos^2¢】 we can write.
now, dividing by' cos^2¢ 'In numerator and denominator.
=) 1-tan^2¢/1+tan^2¢ Rhs .proove.
hope it help you
@rajukumar☺☺☺
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