Cosine Law Problems
Solve problems using the cosine law; a tutorial with detailed solutions and exercises with answers.
Problem 1A triangle has sides equal to 5 cm, 10 cm and 7 cm. Find its angles (round answers to 1 decimal place). Solution to Problem 1:
Problem 2An aircraft tracking station determines the distance from a common point O to each aircraft and the angle between the aicrafts. If angle O between the two aircrafts is equal to 49 ^{ o} and the distances from point O to the two aircrafts are 50 km and 72 km, find distance d between the two aircrafts.(round answers to 1 decimal place). Solution to Problem 2:
Exercises1. A triangle has sides equal to 4 m, 11 m and 8 m. Find its angles (round answers to 1 decimal place). 2. A ship leaves port at 1 pm traveling north at the speed of 30 miles/hour. At 3 pm, the ship adjusts its course 20 degrees eastward. How far is the ship from the port at 4pm? (round to the nearest unit).
Solutions to Above Exercises1. A = 129.8 ^{ o} , B = 34.0 ^{ o}, C = 16.2 ^{ o} 2. 89 miles. More References to Cosine and Sine Laws and GeometryCosine Law Calculator and SolverGeometry Tutorials, Problems and Interactive Applets. Sine Law Problems. Sine Law Calculator and Solver. |