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# Trigi watch

1. Solve the following equation for , in the interval :

Why can I not do them individually? So...

then proceed from there?
2. (Original post by Naruke)
Solve the following equation for , in the interval :

Why can I not do them individually? So...

then proceed from there?
correct
3. (Original post by TeeEm)
correct
My answers don't correspond with the mark scheme
4. (Original post by Naruke)
My answers don't correspond with the mark scheme
then you must be doing something else wrong
5. I'm sorry. I'm a bit retarded. I was looking at the wrong mark scheme
6. (Original post by TeeEm)
then you must be doing something else wrong
Sorry. Another question, same range.

With this I got 2 of the solutions. However, apparently & are solutions to?
7. Anyone?
8. (Original post by Naruke)
Anyone?
9. (Original post by Naruke)
Anyone?
you cannot divide by tangent
10. (Original post by Naruke)
Sorry. Another question, same range.

With this I got 2 of the solutions. However, apparently & are solutions to?
This guy is some level of flop.
This guy is some level of flop.
I know, but all the embarrassing questions will pay off when I get an A.
12. (Original post by Naruke)
I know, but all the embarrassing questions will pay off when I get an A.
It's not embarrassing in the least nor are you a flop in anyway.
13. (Original post by Zacken)
It's not embarrassing in the least nor are you a flop in anyway.

Cheers!

This will probably be my last question on trig:

or

Why would this approach be wrong?
14. (Original post by Naruke)
Cheers!

This will probably be my last question on trig:

or

Why would this approach be wrong?
You can only factorise stuff and equal it to 0 if it's an equation of them form =0.

E.g, if you had x^2 - 2x = -1

Would you collect that as a quadratic and aolve or would you do x(x-2)= -1 so x = -1 and x -2 = -1.

Does that sound reasonable? What are the correct answers to that quadratic?
15. (Original post by Naruke)
Cheers!

This will probably be my last question on trig:

or

Why would this approach be wrong?
You can treat this as an ordinary quadratic by taking 6 away from both sides
16. (Original post by Zacken)
You can only factorise stuff and equal it to 0 if it's an equation of them form =0.

E.g, if you had x^2 - 2x = -1

Would you collect that as a quadratic and aolve or would you do x(x-2)= -1 so x = -1 and x -2 = -1.

Does that sound reasonable? What are the correct answers to that quadratic?
Oh, yes. I think I understand it now. I was looking at these trig equations all wrong. I got -116.6, -56.3, 63.4, 123.7 all to 1 dp which corresponds with the answers.

Thanks again!
17. (Original post by Naruke)
Oh, yes. I think I understand it now. I was looking at these trig equations all wrong. I got -116.6, -56.3, 63.4, 123.7 all to 1 dp which corresponds with the answers.

Thanks again!
No problem! Keep your threads and questions coming. I'm predicting a good grade for you come summer.

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