# The Law of Cosines + Heron's formula - math problems

#### Number of problems found: 7

• Circular railway
The railway connects in a circular arc the points A, B, and C, whose distances are | AB | = 30 km, AC = 95 km, BC | = 70 km. How long will the track from A to C?
• Parallelogram
The sides of the parallelogram are 8 cm and 6 cm long and the angle of the diagonals is 60°. What is its area?
• Find the area
Find the area of the triangle with the given measurements. Round the solution to the nearest hundredth if necessary. A = 50°, b = 30 ft, c = 14 ft
• Triangle
Plane coordinates of vertices: K[11, -10] L[10, 12] M[1, 3] give Triangle KLM. Calculate its area and its interior angles.
• Heron backlaw
Calculate missing side in a triangle with sides 17 and 34 and area 275.
What is the volume of a quadrilateral oblique prism with base edges of length a = 1m, b = 1.1m, c = 1.2m, d = 0.7m, if a side edge of length h = 3.9m has a deviation from the base of 20° 35' and the edges a, b form an angle of 50.5°.
• Calculate triangle
In the triangle ABC, calculate the sizes of all heights, angles, perimeters and its area, if given a-40cm, b-57cm, c-59cm

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Cosine rule uses trigonometric SAS triangle calculator. See also our trigonometric triangle calculator. The Law of Cosines - math problems. Heron's formula - math problems.