Question

X-y/x+y=9 and xy/x+y=-60 Then find (x+y)+(x-y)+xy=??? 1

Answer 1

Answer:

LHS = 1/cosec A - cot A - 1/ sin A

= 1/cosec A cot A * cosec A + cot A/ cosec A + cot A 1/sin A

= (cosec A + cot A)/(cosec^2A -

cot^2A) - 1/sin A

= (cosec A + cot A)/(cosec^2A - cot^2A) - cosec A

= cosec A + cot A - cosec A

= cot A.

RHS = 1/sin A - 1/cosecA+cotA

= cosecA - (cosecA - cotA)/ (cosec^2A - cot^2A)

= cosec A - (cosec A-cot A)

= cosec A - cosec A + cot A

= cot A.

LHS = RHS.

Hope this helps!

Answer 2

I THINK ZEROOOOOOOOOOOOOOOOO