sin 2thetha - cos 2thetha- sin thetha + cos thetha = 0
Answers
Answered by
1
Sin 2thetha - cos 2thetha- sin thetha + cos thetha = 0
When thetha equal to 45°
Answered by
1
T.P. :- sin² theetha - cos² theetha - sin² theetha + cos² theetha = 0
LHS....
sin² theetha - cos² theetha - sin² theetha + cos² theetha
= sin² theetha + cos² theetha - sin² theetha - cos² theetha
= ( sin² theetha + cos² theetha ) - ( sin² theetha + cos² theetha )
= 1 - 1 { sin² theetha + cos² theetha = 1 }
= 0
mark me brainliest........!!!!!!!
Similar questions