- #1
Hammad Shahid
- 64
- 3
Homework Statement
Cos(330 degrees)
*No calculator
Homework Equations
(a^2)+(b^2)=(c^2)
Cos=(delta x / hypotenuse)
The Attempt at a Solution
Hi guys, so today at school, the teacher was doing a problem which stated to solve the cosine of 330 degrees. The teacher used the conjugate angle method to get the answer 0.866.
However, I do not see what is wrong with my method (link to image will be below), because when I do it, I get -0.5. Please help, this has been frustrating me- I do not get why the conjugate method works, but not the one I used.
How I did it: https://imgur.com/a/Vp3ne