Question

exact value of sin(tan^-1(-3/4))

Answer 1

please help

Answer 2

there is a kind of lousy picture of an angle whose tangent is \(\frac{3}{4}\)
you want the sine of that angle, so first find the hypotenuse, which by pythagoras is 5, then you can see that the sine of that angle is \(\frac{3}{5}\)

make sure to put a minus sign in front of it