Math, asked by riu6, 1 year ago

anyone can aolve then.....

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Answered by KritarthPandey

6

tanA =sinA/cosA
A.T.Q.
tan4A=sin4A/sin5A
sin5A=sin4A/tan4A
sin5A=cos4A
cos(90-5A)=cos4A
90-5A=4A
90=9A
A=10

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