Question

How many values of θ will satisfy tan-1 0 = θ when 0º<θ<90º?

Answer 1

How many triangles are there in the first quadrant that have equal legs?

Answer 2

I am suppossed to be using the unit circle.

Answer 3

Would it be infinity, 0, or 2?

Answer 4

There is exactly one triangle in the first quadrant which has equal legs. The only way the tangent can be 1 is if x = y