A-level maths work. Is there any chance someone could help me with this?

No worries. Any time. Feel free to let your friends know of OnlyPhysics - it will help a lot :)

@Get-Some-Nutz What progress have you made on it so far?

@Joel Runevic so far I've done this but its wrong because 4 seconds wouldn't work with this as the speed

@Get-Some-Nutz This part is quite difficult. You need to know that sin(x)/cos(x) can be written as tan(x). See attached photo.

You should be able to do part b as it is similar to 1)c).

Any update on how you are doing?

@Joel Runevic I've gotten this far

@Get-Some-Nutz Yep that looks fine. Except you can just put in sin(80) rather than sin2(40).

It is sin of the the angle*2, if that makes sense.

Its from a set of formulas given to us by our teachers, we were given formulas for time of flight, greatest height, horizontal range and max horizontal range

@Get-Some-Nutz Question 1c. You got the correct angle but you made a small mistake when calculating the speed. The speed is the resultant vector of the horizontal and vertical velocity components. So instead of -, you need to use a +, if that makes sense?

@Joel Runevic oh ok, I get what you mean, so the root of (32^2+10.3^2)

@Get-Some-Nutz Yep!