Question

if sin135-cos240/sin135+xos240=a+rootb then b=

Answer 1

sin(90+45)-cos(180+60)/sin(90+45)+cos(180+60)

=cos45-[-cos60]/cos45+(-cos60)

=(1/√2)-(-1/2)/(1/√2)+(-1/2)

=(1/√2)+(1/2)/(1/√2)-(1/2)

=1/√2+1/√2-1/2

=-1/2+√2