(cos thita)^2+(3cos thita)=2 then cos thita=
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The value of cos theta is mentioned in the above pic
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YaminiRathi:
Hmm
The correct one of it ia given in my guide and the answer is matching with one of those of the sheet :-)
Ya its wrong
Take 2cos^2 thita instead of cos^thita you would get the answer 1/2!
ya I got
The correct question is 2cos^2 thita+3costhita=2 then find cos thita so...ans: 2cos^2thita-2=0 2cos^2 thita+4costhita-costhita-2=0 then 2 cos thita(cos thita+2 )-1 (cos thita+2)=0 therefore (costhita+2) (costhita-1)=0 therefore costhita= -2 and cos thita= 1/2 as -1 is negative we take 1/2 so answer is 1/2....peace Yamini..yay we got it
Hmmm
plz mark the answer as brainlist answer
Okay
kaise karu? kaahape hau uska option?
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