Recent content by bdel89

formula for tan(a-b) is tan a - tan b/1+ tan a*tan b. i don't know the answer for the first one

Homework Statement find the exact value of each expression tan[inverse sin(-1/2) - inverse tan 3/4] Homework Equations i know what the answer is because its in the back of the book but i don't know how to solve it and i asked the teacher and he doesn't help anyone. The Attempt at...