Sample HSC Ext2 Maths Exam: Q15

Q15 from the sample NESA HSC Mathematics Extension 2 exam.

[MathemaEducation]

In a rushed attempt to get this video out in time before the 2020 HSC exam, I have left out q15b because I already uploaded a video on that question. If you want to watch that, the link is:

It's also very possible there are errors so I always appreciate anyone pointing out stupid mistakes.

Hoping to have Q16 uploaded tomorrow. Cheers!

[skang]

for 5:18 could u use Rsin(2t+alpha) instead as well? i keep getting a neg answer...

[xDunkbotx]

18:18 how exactly did you get |v+λm-c|=r? You said just before that we will be solving w=v+λm and |v-c|=r so surely it would be |w-λm-c|=r right?