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marinejas marinejas
wrote...
Posts: 233
Rep: 3 0
3 years ago
a) -1/2 b) 1/√2
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wrote...
Educator
3 years ago
Hi marinejas

I've outlined the steps for (a) in the picture below. The same steps can be used to answer (b). If you still need help with (b), reply back...

marinejas Author
wrote...
3 years ago
I don't quite understand the 3rd step, for the 3rd quad don't you have to subtract not add?
wrote...
Educator
3 years ago
When you have the reference angle, but want the actual angle, you add (as is the case here). When you have the actual, but want the reference, you subtract pi from it (as explained in the video).
marinejas Author
wrote...
3 years ago
okay so not sure if I got b) correct but I got 5/4pi for the 2nd Quad and -1/4pi for the 1st Quad.
wrote...
Educator
3 years ago
Hi marinejas

Unfortunately they're not right:



See my solution, and let me know what you think...
marinejas Author
wrote...
3 years ago Edited: 3 years ago, marinejas
thanks again! oh and also for finding the angle that gives the ratio.. I could also use the unit circle too, bc that works as well.
Post Merge: 3 years ago

for the 2nd quad, you said if it was a reference angle and your trying to find the actual angle you need to add?
Post Merge: 3 years ago

i'm having a very hard time understanding/solving this question, not sure why
wrote...
Educator
3 years ago
It's not easy, that's true.

Which part are you having difficulty with?
marinejas Author
wrote...
3 years ago
Finding the angles, but I figured it out by using the unit circle and it's a lot easier for me.
wrote...
Educator
3 years ago
Finding the angles, but I figured it out by using the unit circle and it's a lot easier for me.

As long as you have a strategy that works all the time, that's what matters. As you can see, the strategies I've been showing you work for me, but are a little bit unconventional. When I learned this stuff back in grade 12, I sucked at it. To a point where I didn't understand a thing. Only when I started doing it my way, did everything change.

Nonetheless, good luck!
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