write in roster form
if sinA+SINB=a and cosA+cosB=b then prove that sin(A+B)=(2ab)/(a.a+b.b)
I received handicapped allowance .this allowance is Not Taxable .so Which Section I got Relif.or Direct Less From salary .kindly Suggest .
gst challan return
format
(x^2+y^2+x)dx+xydy=0
11th class math