Question

Triangle XYZ was dilated by a scale factor of 2 to create triangle ACB and cos ∠X = 2 and 5 tenths over 5 and 59 hundredths

Answer 1

so like a first step you know what mean a dilation by a scale factor of 2 ?

- the sides length of triangle XYZ was doubled to create triangle ACB

\[\cos<X = \frac{ 2,5 }{ 5,59 }\]

- but i think you forgot to post the question

@AZ