Thread: trigonometric function values

find sin (theta).

tan(theta)= - (sqrt)7/2

sec(theta)>0

I'm sorry if this is confusing to you all(math editor) I am also very confused! Please help!

You can solve for theta by taking the . Then just plug in theta as the parameter for sin().

Originally Posted by momuvfour

find sin (theta).

tan(theta)= - (sqrt)7/2

sec(theta)>0

I'm sorry if this is confusing to you all(math editor) I am also very confused! Please help!

Dear momuvfour,

It is given that That is theta is in the second or third quadrants. Hence we have to find values for such that theta will be in the second or third quadrants. Can you continue from here??

Dear macosxnerd101,

By taking you have only considered the case where theta is in the second quadrant.

Hope this will help you.