The point on the graph has coordinates $\left(15,8\right)$(15,8).
Find $r$r, the distance from the point to the origin.
Find $\sin\theta$sinθ.
Find $\cos\theta$cosθ.
Find $\tan\theta$tanθ.
Find $\csc\left(\theta\right)$csc(θ).
Find $\sec\left(\theta\right)$sec(θ).
Find $\cot\left(\theta\right)$cot(θ).
The point on the graph has coordinates $\left(-7,-24\right)$(−7,−24).
The point on the graph has coordinates $\left(7,24\right)$(7,24).
The graph shows an angle $a$a in standard position with its terminal side intersecting the circle at $P$P$\left(\frac{3}{5},\frac{4}{5}\right)$(35,45).
Explain how the unit circle in the coordinate plane enables the extension of trigonometric functions to all real numbers, interpreted as radian measures of angles traversed counterclockwise around the unit circle.