Math, asked by gouthamraj1257, 8 months ago

if a=6b=5c=9 then find angle A

Answers

Answered by kunjal281

0

Please question it properly

Answered by sathvikakkamgari

0

by cos rule

cos A = b^2+c^2-a^2/2bc

=25+81-36/2*5*9

=70/90

=7/9

=cos-1(7/9)

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