I need to solve for x, but,..(adsbygoogle = window.adsbygoogle || []).push({});

honestly, i haven't got a clue for where to begin, or

even,.. oy, not sure

here are two of my problems:

sin x = (3^1/2) / 2

and

2 cos 2 x + cos x = 0

I know i'm supposed to use the unit circle,.. well, maybe

any help at all would be very much appreciated ^^

:shy:

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

Dismiss Notice

Join Physics Forums Today!

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

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

# Homework Help: I have'nt got a clue: trigonometric equations

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