Trigonometry 2-5 Lesson

Radar Stations A and B are on an east-west line, 3.7 km apart. Station A detects a plane at C, on a bearing of 61° .  Station B simultaneously detects the same plane on a bearing of  331°. 


Find the distance from A to C.

A ship leaves port and sails on a bearing of N 47° E for 3.5 hours. It then turns and sails on a bearing of S 43° E for 4.0 hours. If the ship's rate of speed is 22 knots, find the distance that the ship is from port.

You need to know the height of a tree. From a given point on the ground, you find that the angle of elevation to the top of the tree is 36.7°. You then move back 50 feet. From the second point, the angle of elevation to the top of the tree is 22.2°

Find the height of the tree to the nearest foot.