Question

Find the value of RS

Answer 1

`RS~*~RT=RQ^2`

`x(x+40)=45^2`

`x^2+40x-45^2=0`

`x=(-40+-√((40)^2+4*45^2) )/(2)`

`=(-40+-√(9700) )/(2)`

`x=29.2`

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