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Can someone please explain this whole question to me please I don't understand why in the solution they added pi/3 instead of pi/6

Thanks!

Why is the answer B and not C???

@howcanibesmarter Thank you so much for your help!!

Ahh I see I see, thank you for your explanation!

Yeah I got that, but how did you get the nc3 and nc4 part ?? and why was it added

ALso yeah an explanation on 10 would be great!

Thank you so much for the explanation. I was confused how you expanded it though in the third line to get that. Can you explain how you did this please, as I didn't understand the following lines as much because of this

Yep, would you be able to show how to do it please, if you don't mind?

Can someone please show me how to do this q, the answer is D

Hmm, you reckon you could draw me a diagram if you don't mind making it clear the angle we are calculating?

Part a for reference

In this Q, why do the answers calculate the angle of initial velocity to the vertical instead of the horizontal???

How do we do this q?

Someone please explain how to do this question

Can someone please explain how to do this question??

Can someone explain why the answer to this is D please??

Can someone please show how to do c (ii)?

Ahh I see yes you're right. For 14, is that the full explanation as to why thats the answer or would there be more to it?

How do we do this question??