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one sides 6cm and the other is 10cm
impossible without more information.. sorry :p
You must have been give angles or something else?
If you're given an angle you'll have to use the cosine formula
In this case you most definitely would've been given at least one angle in an exam question scenario... You would use the sine rule or cosine rule, as opposed to pythagoras' theorem.
Sine rule: a/sinA = b/sinB = c/sinC
Cosine rule: c^2 = a^2 + b^2 -(2ab x cosC)
Another useful rule to remember is that for the area of a triangle, which is:
1/2 x ab x sinC
All of these equations can be manipulated to find specific lengths, and the values a,b,c,A,B,C can all be interchanged as long as they're in a similar form to as above (if that makes sense?).
Noope i didnt even get an angle, thats why im so confused! x