Right Triangle Inside Circle O

Section 4.4



Let me see.

In Section 4.2, sin t = y and cos t = x.

My answer to part (a) is sin t = y and cos t = x.

Using the Pythagorean Theorem, I found r to be sqrt{x^2 + y^2}.

Using the definition of sine and cosine in this section, I found thefollowing:

sin (theta) = y/r

sin (theta) = y/[sqrt{x^2 + y^2}]

cos (theta) = x/r

cos (theta) = x/[sqrt{x^2 + y^2}]

I cannot answer part (d) without knowing if parts (a) and (c) are correct.

You say?

 

correct

 

Thank you. Happy to know that my answer in terms of parts (a) through (c) is right but I still don't know how to answer part (d). What conclusion can be stated based on my answer to parts (a) and (c)?

 

Thank you. Happy to know that my answer in terms of parts (a) through (c) is right but I still don't know how to answer part (d). What conclusion can be stated based on my answer to parts (a) and (c)?