Question

x=1 y=0 z=2 a) x-y÷z-x​

Answer 1

Answer:

Given, tan

−1

x+tan

−1

y+tan

−1

z=π

⇒tan

−1

x+tan

−1

y=π−tan

−1

z

⇒tan

−1

1−xy

x+y

=tan

−1

(−z)

⇒x+y=−z(1−xy)⇒x+y+z=xyz

Answer 2

solution

= 1-0÷2-1

=1÷1

=1

answer is 1