...examples are given here ; others will be given later. 1. At a point 150 ft. from, and on a level with, the base of a tower, the angle of elevation of the top of the tower is observed to be 60°. Find the height of the tower. Let AB be the tower, and P the point...

...10.5 and one acute angle is 33°. Find the other sides. 5. At a point 320 ft. away and on a level with the base of a tower the angle of elevation of the top of the tower is observed to be 28°. What is the height of the tower ? 6. On the opposite shores of...

...following for x and y ; sin"1 x -f- sin"1 y = 120°. cos"1 x — cos"1 y = 60°. 91. At a point 50 ft. from the base of a tower the angle of elevation of the top of the tower was found by the use of a transit instrument to be 68° 18' [68.3°]. If the height of...

...or simply the depression of the object. 26 EXAMPLES 1. At a point 150 ft. from, and on a level with, the base of a tower, the angle of elevation of the top of the tower is observed to be 60°. Find the height of the tower. Let AB be the tower, and P the point...

...proportional to the square roots of the numbers last given. 2. At a point 200 feet from, and on a level with, the base of a tower the angle of elevation of the top of the tower is observed to be 60°. What is the height of the tower? 3. A ladder 40 feet long stands...

...convenient scale ; then measure the required part for your estimate. 1. At a horizontal distance 423' from the base of a tower the angle of elevation of the top is 57°. Find the height of the tower. 2. A vertical pole 24^-' high casts a horizontal shadow 43^-'...

...P to Q is 160 m, find the size of ZQPR to the nearest whole degree. p 70 m © From В, a point 80 m from the base of a tower, the angle of elevation of the top of the tower is 29°. a Find the height of the tower, correct to 1 decimal place. С is a point 30...