LHS = (cosx-cosy)^(2)+(sinx-siny)^(2) =[2sin(x+y)/(2)sin(y-x)/(2)]^(2) + [2cos(x+y)/(2)sin(x-y)/(2)]^(2) =4sin^(2)(x+y)/(2)sin^(2)(x-y)/(2) =4sin^(2)(x-y)/(2)[(sin^(2)(x+y)(2)+cos^(2)(x+y)/(2))] =4sin^(2)(x-y)/(2) ...
Prove thatsinx−sinycosx+cosy=tan(x−y)2 View Solution Prove that(cosx+cosy)2+(sinx−siny)2=4cos2(x+y2) View Solution ਸਿੱਧ ਕਰੋ ਕਿ :-(cosx−cosy)2+(sinx−siny)2=4sin2x−y2 View Solution
sin(x + y)- sin(x - y) = 2 cos x sin y Prove the identity: sin(x + y) - sin(x - y) = 2 cos x sin y Prove the identity. sin(x - pi) = -sin(x). Prove this identity: (cosx/1+sinx)-(1-sinx/cosx)=0 Prove the following i...
【解析】(|a|)/(||x|)secx=(|a)/(|⋅x)1/(cosx)=(0-(-sinx)|)/(cos^2x) =1/(cosx)(sinx)/(cosx)=secxtanx Rewrite y=co-1x as x=cosy and then apply(implicit differentiation) to get 1=-siny. Butsn2y+cos2y=1, SO_2^2=√(1-x^2) T husy/x=(1-)/(|x|)sin...
Ifsinx+cosy=aandcosx+siny=b, then tanx−y2is equal to View Solution Free Ncert Solutions English Medium NCERT Solutions NCERT Solutions for Class 12 English Medium NCERT Solutions for Class 11 English Medium NCERT Solutions for Class 10 English Medium ...
View Solution ਸਿੱਧ ਕਰੋ ਕਿ :-(cosx−cosy)2+(sinx−siny)2=4sin2x−y2 View Solution Doubtnut is No.1 Study App and Learning App with Instant Video Solutions for NCERT Class 6, Class 7, Class 8, Class 9, Class 10, Class 11 and Class 12, IIT JEE prep,...