Question

Find the value of `tan^2 180^@-2csc270^@`?

Answer 1

`tan^2 180^@-2csc270^@=2`

Explanation:

As `tan180^@=0` and `csc270^@=-1`

`tan^2 180^@-2csc270^@=0^2-2xx(-1)=0+2=2`