How to solve trigonometric equations using the Quadrant Rule 

his voice changer glitched for a sec

word, at school it was really hard to understand but this really helped me uunderstand it better

I like saving lives. Feels good. We should all do it.

Cheers

I edited an error out and that caused the voice change

@@ExamSolutions_Maths lol I'd just say sure guys its a special talent of mine lol

That's up to you but I think not. The quadrant rule IMO is quicker.

No, not sure why you think that?

The range 0,-2pi is equal to the range of 0,-360 degrees because 2pi equals 360 degrees

C2 generally.

+katie kwok Did you find an answer?

+katie kwok feta

+John Doe No you don't need it for C2, you only learn it in C3 and C4

+CrackPot Gaming What...? If your aim is to correct her then you should put the correct spelling i.e. *theta

wadiens

***** You have made a mistake earlier. You will always get an error if you try to inverse sin any value greater than 1 or less than -1. The sin graph goes between -1 and 1. Your calculator is ok but you must have made a mistake in your calculation. What was it?

ExamSolutions I see how I earlier went wrong. But now, I enter `shift` and then press `sin.` I then enter the root key, then I press the key immediately to the left of the root key. Then I enter the numerator ( 3 ) on top and then press the down key and enter the denominator (2). I then close the bracket and press =. But it doesn`t matter whether I close the bracket or not. I still get a Maths Error. On the other hand, if I enter shift, followed by `sin` followed by root, then 3, and then followed by the conventional calculator command symbol to divide ( . / . ) the answer comes out as 60. So I know how to get an answer. I`m just so used to getting the correct answer by simply entering the inverse of the functions.

ExamSolutions Ps, I now see exactly where I have gone wrong. Thanks for your time.