john262812
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Hi,
Need help on this q to do with simultaneous equations, a full method would be much appreciated

https://prnt.sc/us6lpz
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emma963
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All sides of an equilateral triangle are the same
1) put side 1 equal to side 2
2) simplify (call this equation a)
3) put side 1 equal to side 3 (side 2 could be used instead of side 1)
4) simplify (call this equation b)
5) solve a and b as they are simultaneous equations.

Hope this helps.
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davros
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(Original post by john262812)
Hi,
Need help on this q to do with simultaneous equations, a full method would be much appreciated

https://prnt.sc/us6lpz
OK, so you know that the 3 sides of an equilateral triangle have equal length, so by setting (for example) expression 1 = expression 2 and expression 1 = expression 3 you can set up 2 simultaneous equations in 2 unknowns.

What have you tried so far and where are you stuck?
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john262812
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(Original post by davros)
OK, so you know that the 3 sides of an equilateral triangle have equal length, so by setting (for example) expression 1 = expression 2 and expression 1 = expression 3 you can set up 2 simultaneous equations in 2 unknowns.

What have you tried so far and where are you stuck?
i've done the equations but just not sure how to get the length
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davros
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(Original post by john262812)
i've done the equations but just not sure how to get the length
Can you type out or upload what you've done?

Once you've solved the equations for x and y you can substitute back into any of the original expressions to get a side length.
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john262812
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(Original post by davros)
Can you type out or upload what you've done?

Once you've solved the equations for x and y you can substitute back into any of the original expressions to get a side length.
got it, thanks
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