WarmUp Pg 462 59 WarmUp WarmUp Cos adjacent

Warm-Up Pg. 462 #59

Warm-Up

Warm-Up Cos = adjacent / hypotenuse adjacent hypotenuse 29 20 opposite Use Pythagorean Theorem to find the missing (opposite) side. a 2 + 202 = 292 a 2 = 292 - 202 a 2 = 441 a = 21

Warm-Up Cos = adjacent / hypotenuse adjacent hypotenuse 29 20 opposite 21

Assignment Questions

Lesson 8 -4 Trigonometry pp. 456 -462

Objectives • Find trigonometric ratios using right triangles. • Solve problems using trigonometric ratios.

Benchmarks • 1 b. Given exact irrational solutions, determine the best rational estimation. (DOK 2) • 1 c. Solve real-world or application problems that involve square roots and the Pythagorean Theorem. (DOK 3) • 4 b. Solve real-world applications and mathematical problems to find missing measurements in right triangles by applying special right triangle relationships, geometric means, or trigonometric functions. (DOK 2) • 4 e. Apply the relationships of sine, cosine, and tangent to problems involving right triangles. (DOK 2)

Note You can use trigonometric ratios to find the missing measures of a right triangle if you know the measures of two sides of a triangle or the measure of one side and one acute angle.

Check Your Progress p. 458 3. Jonathan is standing 15 yards from a roller coaster. The angle formed by the ground to the top of the roller coaster is 71. How tall is the roller coaster? Draw a picture to represent the situation!

Check Your Progress p. 458 3. Jonathan is standing 15 yards from a roller coaster. The angle formed by the ground to the top of the roller coaster is 71. How tall is the roller coaster? Label the given info! x 71° 15 yd

Check Your Progress p. 458 3. Jonathan is standing 15 yards from a roller coaster. The angle formed by the ground to the top of the roller coaster is 71. How tall is the roller coaster? Which ratio TANGENT!!! uses adjacent and opposite? x 71° 15 yd

Check Your Progress p. 458 3. Jonathan is standing 15 yards from a roller coaster. The angle formed by the ground to the top of the roller coaster is 71. How tall is the roller coaster? Solveyards for x! 43. 6 x 71° 15 yd

Mid-Chapter Quiz p. 463 10. Find x to the nearest tenth. Which ratio uses Label COSINE!!! Sides Solve for? x! adj & hyp 53. 2 53 32 x

Questions

Assignment Practice Extra Practice Pg. 460 -461 Geometry. Online. com #24, 25, 44, 46, 47, 48 Self-Check Quiz Lesson 8 -4