Question

If MB=200cm and μ(MBC) = 40°, what is AB?

Round your answer to the nearest tenth and type it in the blank without "cm".

Answer 1

290.4 cm

Explanation:

BC = MB cos 40°

= 200 x 0.766

BC = 145.2

MC bisects AB

So,

AC = BC

AB = AC + CB

= AC + BC

= BC + BC

= 2BC

= 2 x 145.2

AB = 290.4 cm