# find exact values for theta

• Feb 28th 2008, 03:29 PM
algebra2
find exact values for theta
what does the theta sign and red arrow symbolize?

the question:

http://img148.imageshack.us/img148/4668/theta1je0.jpg

my work:

http://img148.imageshack.us/img148/6446/theta2xr6.jpg

i don't know if this is correct. as you can see, i used the pythgorean thm to find the hypotenuse (5). then using SOHCAHTOA, i found the answers? correct or do they have to be in decimal form since it says exact values?
• Feb 28th 2008, 03:55 PM
TheEmptySet
Your answers are correct. Fractions are exact values and do not need to be turned into decimals.

note: the last can be rewritten as

$\tan(\theta)=-\frac{4}{3}$
• Feb 28th 2008, 04:00 PM
algebra2
gee, thx pal. no kidding, you're the best.