Math, asked by shridharshubham, 1 year ago

if A+B+C=270 degree then find cos2A+cos2B+cos2C=

Answers

Answered by ansarishahnawaz

cos2A+cos2B+cos2C=cos 540

shridharshubham: solution

Vivi842: steps please

ansarishahnawaz: it is very simple, just multiply the 2nd equation by cos2 or 2cos

Answered by moksh07

If all are doubled then 270 will also be doubled

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