Question

If sin x + cos x= 1, prove that cos x minus sin x= +minus 1

Answer 1

Answer:

Step-by-step explanation:

sin x + cos x= 1

squaring we get

sin² x + cos² x +2sinx cosx= 1

1+2sinx cosx=1

2sinx cosx=0

(cosx-sinx)²=sin² x + cos² x -2sinx cosx

=1-2*0

=1

(cosx-sinx)²=1

cosx-sinx =±1

proved

Answer 2

Answer:

This may help you gyzz

Thanks