1. ## Right triangles: help, please

There are only eight problems...I think that I have the first two down...and possibly the last two..not sure if they are correct, if maybe someone can check my work so that I know if I am doing them correctly...The others, I don't really understand where to start...if maybe someone could help me...
The directions for 9 -11 got cut off a bit...should say determine the third side and then find the other five trig functions

2. Originally Posted by aikenfan
There are only eight problems...I think that I have the first two down...and possibly the last two..not sure if they are correct, if maybe someone can check my work so that I know if I am doing them correctly...The others, I don't really understand where to start...if maybe someone could help me...
The directions for 9 -11 got cut off a bit...should say determine the third side and then find the other five trig functions
In 4, you can simplify the $\displaystyle \sqrt{468}$.

For 39:
$\displaystyle \frac{sin(\theta)}{cos(\theta)} + \frac{cos(\theta)}{sin(\theta)} = csc(\theta)sec(\theta)$

$\displaystyle \frac{sin^2(\theta) + cos^2(\theta)}{sin(\theta)cos(\theta)} = csc(\theta)sec(\theta)$

The rest look good!

-Dan

3. Hello,

for #11:

$\displaystyle \sec(\theta)=4~\implies~\frac1{\cos(\theta)}=4 ~\implies~\cos(\theta)=\frac14$

for #33: change only the $\displaystyle \cot(\theta)$:

$\displaystyle \tan(\theta) \cdot \frac1{\tan(\theta)}=1$