Question

Let (3,7 ) be a point on the terminal side of θ . Find the exact values of cosθ , vac θ , and tanθ.

Answer 1

cosθ = 3root58 / 58

cscθ = root58 / 7

tanθ = 7/3

Explanation:

Draw a picture of the point. You can make a right triangle. One leg is 3 and one leg is 7. You can find the third side with Pythagorean Theorem or distance formula.

see image.

Then use right triangle trigonometry to find cosθ, cscθ, tanθ.

cosθ is the adjacent side over the hypotenuse.



cscθ is sinθ flipped over.

tanθ is opposite side over adjacent side.

see image