"Demonstrate how you can determine the value of cos210 degrees for a circle with radius 4 centered at the origin" I understand you have to use the 30-60-90 triangle to solve but can t remember how!
cos 210⁰ = - cos 30⁰ = - √3 / 2
No need to consider radius of 4
Copyright © 2024 EBIN.TIPS - All rights reserved.
Answers & Comments
cos 210⁰ = - cos 30⁰ = - √3 / 2
No need to consider radius of 4