Question

Can someone check my answers please? Let theta be an angle in quadrant II such that cos theta=-2/3. Find the following:

A. sin theta
B. tan theta

For A I got sqrt 5/3
For B I got sqrt 5/-2

Answer 1

i'm checking now.

Answer 2

thank you!

Answer 3

yea.

Answer 4

what did you do to check my answers? i just want to make sure I'm doing the problem right lol :p

Answer 5

i had used a caclulator. i can't explain how i did it. but the way i learned it is by the graphing caclulator. but i always get them right.

Answer 6

awesome! can you check 2 more for me please? :) I'll put them in new questions so you can get more medals!

Answer 7

yea.