Question

How do I go about solving this correctly? I originally got -23/33 but it's saying im incorrect.

Answer 1

Explanation:

You should use the trig identity:

tan(a+b) = (tan a + tan b ) / ( 1-tan a tan b ) =

(4/3 + 12/5 ) / ( 1- (4/3 *(12/5) = -1 23/33