Question

Trigonometry Help.

Find the exact values of the six trigonometric functions of given the point (-4, 5) on the terminal side of theta in standard position.

Answer 1

you need the length of the hypotenuse, which you find via pythagoras as
\[h=\sqrt{4^2+5^2}=\sqrt{16+25}=\sqrt{41}\]

Answer 2

then take the appropriate ratios
for example
\[\cos(\theta)=-\frac{4}{\sqrt{41}}\] etc