Question

The figure shows a rhombus whose sides are
73.2 cm long. The angle θ is 31◦
Find the distance from A to B.
Answer in units of cm

Answer 1

here <c is also 31
opposite angles of rhombus are equal

Answer 2

so BC/DC =cos 31
or BC = DC cos31

Answer 3

hence AB = 73.2 - 73.2 cos31=73.2 (1-cos31)

Answer 4

appx 10.4553 cm

Answer 5

Thank you sooo much!