Calculate the area of a rhombus if its side is 10 cm and one of the corners is 150 °.

The sum of the adjacent angles of the rhombus is 180, then the angle BAD + ABC = 180.

Angle BAD = 180 – 150 = 30.

The area of a rhombus is equal to the product of the square of its sides by the sine of the acute angle between them.

Savsd = AB ^ 2 * SinBAD = 10 ^ 2 * Sin30 = 100/2 = 50 cm2.

Answer: The area of the rhombus is 50 cm2.



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