Question

Trigonometry help? Has to do with unit circles.
@brusmack

Answer 1

tan = sin/cos
We know that sin is \[\frac{ \sqrt{2} }{ 2 }\] so \[1=\frac{ \frac{ \sqrt{2} }{ 2 } }{ \cos }\]
so cos is also \[\frac{ \sqrt{2} }{ 2 }\]
=>\[\theta=\frac{ \pi }{ 4 }\]

Answer 2

@brusmack thank you so much

Answer 3

45-45-90 triangle