Question 1204867
Find the exact values of sin θ, cos θ, and tan θ if the terminal arm of ∠θ in standard position contains the given point.
P(-8, 15)

Calculate the hypotenuse using Pythagorean Theorem

{{{hypotenuse=sqrt(((-8)^2+15^2))=sqrt((64+225))=sqrt(289)=17}}}

Use the trig. definitions to find all of the angles:

sinθ=opposite/hypotenuse=15/17

cosθ=adjacent/hypotenuse= -8/17

tanθ=opposite/adjacent=-15/8

You round it off as required  when you write in decimals

*[illustration point1.png].