# Trigonometric Equation

• January 13th 2010, 08:59 AM
matsci0000
Trigonometric Equation
Find the value of theta satisfying both the equations:
sin theta = -1/2
tan theta= 1/V3
• January 13th 2010, 09:03 AM
skeeter
Quote:

Originally Posted by matsci0000
Find the value of theta satisfying both the equations:
sin theta = -1/2
tan theta= 1/V3

$\theta$ is in quadrant III ... (why?)

now look at the unit circle (with which you should already be familiar) and answer the question.

http://galileo.math.siu.edu/~msulliv...unitcircle.gif