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Solve the right triangle. 15. Solve right triangle . ABC if C=90° , b=219 cm, and c=647 cm. 16. A 40-ft flagpole cast a 30-foot shadow. Find the angle of elevation of the sun to the nearest degree. 17. The angle of depression from a helicopter to its landing port is 64°. If the altitude of the helicopter is 1600 m, find the distance from the ... ................
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