(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Determine the following and state quadrant.

cos(-65°)

2. Relevant equations

I make this the 2nd quadrant.

3. The attempt at a solution

where:-

-cos(180 - θ)

-cos ( 180 - (-65))

-cos245

= 0.423

however i wasnt sure if it lied in the 4th quadrant

so:-

-cos(360 - θ)

-cos ( 360 - (-65))

-cos425

= 0.423

Can anyone help me understand this PPPPUUUUURRRRRRLEASE.

Thanks guys.

1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution

**Physics Forums | Science Articles, Homework Help, Discussion**

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Trig Quadrant Help

**Physics Forums | Science Articles, Homework Help, Discussion**