Trigonometry-Cosine Ratio

Which of the following expressions is equal to the value of x? 0.9(sin50) SIN50/0.9 0.9(cos50) COS50/0.9

0.9(sin50)

Find x to the nearest tenth. 0.7 1.0 1.1 1.4

1.4

Based on the given triangle, the cosine of the 60 degree angle is: PIE 3/2 1/2 PIE 3

1/2

Which of the following expressions is equal to the value of x? 119(cos52) 52(cos119) COS52/119 119/COS52

119(cos52)

In a right triangle the cosine of an acute angle is 1/2 and the hypotenuse measures 7 inches. What is the length of the side of the triangle adjacent to this angle? 1 3.5 6.1 7

3.5

Angle X is an acute angle in a triangle. If the cos X = 4/5, then the sin X = ______. 4/5 3/5 3/4 4/3

3/5

Find the measure of angle A. 32 57 59 No angle exists.

57

Select all of the equations that represent a correct ratio between the angles and sides in right ABC a has measure of 40°. Select all of the equations that represent a correct ratio between the angles and sides in ABC as indicated above. H= 11/SIN 40 H= 9/SIN 40 H= 11/COS50 H= 9/COS50

H= 11/SIN 40 H= 11/COS50

In right ABC, B is a right angle and sin C = x. sin A =

PIE 1-X^2

Based on the given triangle, the cosine of the 30 degree angle is: PIE 3/2 1/2 1/PIE 3

PIE 3/2

The legs of a right triangle are lengths x and x3. The cosine of the smallest angle of the triangle is _____. 1/2 PIE 3 PIE 3/2 2 PIE 3

PIE 3/2

The cosine of an angle is a(n) _____. proportion ratio finite number imaginary

RATIO

In right ABC, B is a right angle and sin C = x. cos A =

X

Based on the diagram, which of the following represents the cosine of 70 degrees? 12.4/X X/12.4 70/12.4 12.4/70

X/12.4

The cosine ratio is used to find missing angle measures and side measures in ______. any triangle a right triangle an acute triangle an obtuse triangle

a right triangle

The cosine ratio is the _____ side over the hypotenuse. adjacent opposite closest farthest

adjacent

In ΔABC, ∠CAD = 22° and segment CB = 15 cm. If the cos of 22° = 0.9272, then the sin of ∠C = _______. -0.9272 0.9272 0.6537 -0.6537

0.9272

Find A to the nearest degree. A=

47 DEGREES

The sine of a 30 degree angle is equal to the cosine of a _____ degree angle. 30 45 15 60

60

Based on the diagram, all of the following are true except cos38 = 24/X sin52 = 24/X cos38 = X/34 cos52 = X/24

cos52 = X/24