What is the greatest common factor 21,24,27

Order the measurements from the least to the greatest. 2,720 ml , 24.91 l , 0.0268 kl

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).

In the diagram, the ratios of two pairs of corresponding sides are equal to prove that almn - axyz by the sas similarity theorem, it also needs to be shown that x 6 z un z zz un = 2x zləzz lezy