Given that cos a equals 4/5 what is sin a/2

Aye asap pls ! markin da brainiest too ! btw da step choices are all add, distribute, divide, n subtract

Complete each statement from the information given and the triangle criterion you used. if the triangles cannot be shown to be congruent, leave the box for the second triangle blank and choose for reason “cannot be determined.” carbon - regular hexagon. ∆can ≅ ∆ by

What is the measure of sty in oo below? 130 310 230 50