I have two angle measurements (90degrees and say 5.5 degrees) of a right angled triangle, plus the bottom distance say 1.5m and the side or height measurement (say 12cm).

This is for physics. We are only given 5 average speeds (velocity m/s) and 5 different distances of a free rolling car moving down a slope before stopping at a stopper. No other details are given, i.e car weight, friction, time etc.

Is there anything else fancy that I can do with this data that would make sense in physics?

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With all due respect to Peco's note, you might want to look at what you have written again.

You have given some information, but haven't actually asked a question- or rather, you havent given enough information. As you say time is not given, this raises several possible solutions. What exactly do you want to know? I would guess that you have an object that starts with an initial velocity and you need to find out how long it takes to go from the top of the slope to the bottom of the slope. Does this need to allow for acceleration or not? Do you want to find the distance travelled? The average velocity from top to bottom? How fast the car needs to be travelling at the top to have the given velocity at the bottom of the slope?

Without being clear in what you need, we cant really help- and in this case the Excel part is largely irrelevant, as it is more a case of using simple equations.

As an aside, a right angle triangle will always have a 90 degree angle so this is irrelevant information, and the third angle can be easily calculated from knowing the other non 90 angle, although you need to know which angle is stated. Having said that, as you have the length of the two shorter sides, Pythagoras gives the hypotenuse anyway, so the angles themselves are not required if yo uhave 2 sides. Also the weight of the object is not required, as it has no effect on the acceleration in this case or the starting (finishing?) velocity. If no friction coefficient is given it is generally taken as negligible and is ignored.