Maths
posted by Anita .
the acute angles of a rhombus are 76 degrees if the shorter diagonal is of length 8 cm calculate of the sides of the rhombus to the nearest mm

Maths 
Anita
Ms Sue pls help

Maths 
Reiny
the diagonals of a rhombus rightbisect each other, so
make a sketch and look at the rightangled triangle with angle 38° (half the 76) and leg of 4 cm
The hypotenuse is the side of the rhombus, call it x
sin 38° = 4/x
x = 4/sin38 = appr. 6.487 cm
= appr 65 mm
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