# Length + The Law of Cosines - math problems

- A rhombus

A rhombus has sides of length 10 cm, and the angle between two adjacent sides is 76 degrees. Find the length of the longer diagonal of the rhombus. - ABCD

AC= 40cm , angle DAB=38 , angle DCB=58 , angle DBC=90 , DB is perpendicular on AC , find BD and AD - Scalene triangle

Solve the triangle: A = 50°, b = 13, c = 6 - Side c

In △ABC a=2, b=4 and ∠C=100°. Calculate length of the side c. - Two boats

Two boats are located from a height of 150m above the surface of the lake at depth angles of 57° and 39°. Find the distance of both boats if the sighting device and both ships are in a plane perpendicular to the surface of the lake.

We apologize, but in this category are not a lot of examples.

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Do you want to convert length units? Cosine rule uses trigonometric SAS triangle calculator.