Re: 2012 Year 9 &10 Mathematics Marathon
![](https://latex.codecogs.com/png.latex?\bg_white sin^2\theta +cos^2\theta =1 )
Edit: Because I imagine that's how you would work it out.
You used this in your solution didn't you?k i got it, had to use trig identity tho :/ don't know how u guys got it without using it
Edit: Because I imagine that's how you would work it out.
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