so tan(a) = 5/2 and tan b = 1/2 (2 angles on a triangle)
I want to add both angles - the sum formula for tangents is (a+b)/(1-a*b)
the issue is this is equal to -12
what am I missing here?
(a + b) / (1 - a*b)
(5/2 + 1/2) / (1 - (5/2*1/2))
(2.5 + 1/2) / (1 - (1.25))
( 3 ) / ( - 0.25) == - 12
ok so the correct answer was -12 and I was overthinking it thank you!