Maths help (2 Viewers)

[jimmysmith560]

View attachment 30665
Help with these two questions

Question 10 is from a Baulkham Hills High School Mathematics Extension paper:



I hope this handwriting isn't too hard to read.

I hope this helps

 

[Qeru]

View attachment 30665
Help with these two questions

Since second quadrant.

 

[jimmysmith560]

do you know where I could get the paper?

Baulkham Hills 2009 3U Prelim HY & Solutions.pdf

 

[Eagle Mum]

Question 10 is from a Baulkham Hills High School Mathematics Extension paper:

View attachment 30666

I hope this handwriting isn't too hard to read.

I hope this helps

It’s very kind of you to supply the solution - just one tiny omission of cos 84° in equation 5, which appears correctly in equation 6.

 

[jimmysmith560]

It’s very kind of you to supply the solution - just one tiny omission of cos 84° in equation 5, which appears correctly in equation 6.

Thank you for this!

 

[Eagle Mum]

Since second quadrant.

It’s kind of you to provide the solution but I think there’s a typo.
The solution is correct but

|cosθ| < 1

I assume it was just a keyboard typo and you entered the correct value in your calculator(?)

 

[Qeru]

It’s kind of you to provide the solution but I think there’s a typo.
The solution is correct but

|cosθ| < 1

I assume it was just a keyboard typo and you entered the correct value in your calculator(?)

yeah should have been