Fint the value of #Sin theta + Cos theta# ?
If #Sin theta * Cos theta=1/2# find the value of #Sin theta + Cos theta#
If
2 Answers
Mar 16, 2018
Explanation:
Apr 29, 2018
Another approach...
Explanation:
Given:-
#sintheta cdot costheta=1/2#
#=>2 cdot sintheta cdot costheta=1#
#"So,"#
#sintheta +costheta#
#=sqrt((sintheta+costheta)^2)#
#=sqrt(sin^2theta+2 cdot sintheta cdot costheta+cos^2theta#
#=sqrt((sin^2theta+cos^2theta)+2 cdot sintheta cdot costheta#
#=sqrt(1+1)#
#=sqrt2# Hope it helps...
Thank you...
:-)