Merced College; Don Power

MATH 2 – STUDY GUIDE FOR CHAPTER 9

9.1 Without a calculator, complete the table of values of trig functions of special angles:

	0^o	30^o	45^o	60^o	90^o
sin θ
cosθ
tanθ

9.1 (No calculator): Use the Pythagorean Theorem to calculate the third side of the right triangle, and then find the trig values:

a. sinθ

b. cosθ

c tanθ

9.1 Use your calculator to find the angle θ in the previous problem

9.1 Find the missing sides in this right triangle:

9.2 If the angle of elevation from the ground to the top of a building is 38^o and it is 42 feet from the base of the building to the tip of its shadow, how tall is the building?

9.3 Find the largest angle in a triangle for which a = 6.5, b = 8.3, and c = 14.7

9.3 Find the missing side of a triangle if a = 12.3, c = 8.7, and B = 53.2^o.

9.4 In the previous problem, after finding the missing side, find the other two angles.

9.4 Find side c in a triangle if A = 37^o, B = 78^o, and side a = 13.2

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