IM2.6 Review 2: Trigonometry

a. Find the sine, cosine, and tangent values for angles r and s (leave as fractions). b. Why is the sine of an acute angle the same as the cosine of its complement?

Find the measure of each angle above. Round to the nearest tenth of a degree.

a. How long is the guy wire? Round to the nearest tenth. b. How far above the ground is it fastened to the tower? (point B) c. How tall is the tower (DC) if angle DAC=71?