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