Question

Determine the tangent of 90 degrees

Answer 1

`\begin{gathered} \tan (90)=(\sin(90))/(\cos(90)) \\ \sin (90)=1 \\ \cos (90)=0 \\ \tan (90)=(1)/(0)=\text{ It can not be calculated } \\ also\text{ tan(90) would be }\infty \\ \\ \sin \text{ (120) = ? from the graph} \\ \sin \text{ (120)=}\frac{\sqrt[]{3}}{2} \\ \text{the }\sin \text{ (120) is }\frac{\sqrt[]{3}}{2} \end{gathered}`