The point (3, -4) is on the terminal side of an angle 0 . What is cos 0 ?

asked Jun 2, 2018 154k views

5 votes

7.7k points

Please log in or register to add a comment.

5 votes

draw it
cos=oposite side/hypothuse

oposite side=y=-4
hypotonuse=distance from (0,0) to (3,-4)
which is
D=√(3^2+(-4)^2)=√(9+16)=√(25)=5

so it would be -4/5

Mehmet Aras answered Jun 6, 2018

7.9k points

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers