Need help with gcse maths question!

Maybe try finding the area and then substitution? I'll try doing it and get back to you :smile:

Try using Pythagoras, since it's right angled and you have been given 2 sides.

Pythagoras.... a^2 = b^2 + c^2

I did it mentally and think I got k=2 but OP show your working!

Original post by WarriorInAWig

I did it mentally and think I got k=2 but OP show your working!

b^2 = 4 so yeah. If OP struggles to understand why I will happily do a step by step but it is fairly simple.

(edited 10 years ago)

i know its more sense to do Pythagoras, but couldn't you use the sine rule? (sinA/a = sinB/b)

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