Math, asked by shridharshubham, 1 year ago

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

Answers

Answered by ansarishahnawaz
3
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
2
If all are doubled then 270 will also be doubled
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