1_ circle around the answer 2- Your handwriting is special so I can understand 3- I just want the answers

HW 20: Section 7.3: The Law of Cosines Question 6 of 6 (1 point) | Question Attempt: 4 of Unlimited Espana 2 5 6 The distance between cities A and B on a map is 10.75 in. The distance from city B to city C, is 8.75 in, and the distance from C to A is 16.5 in. If the bearing OO from A to B is N840E, find the bearing from C to A. Round to the nearest tenth of a degree. EO 16.5 in 8.75 in B A 10.75 in The bearing from city C to city A is approximately (Choose one) V (Choose one) X 5 N SV 1 v 2 V 3 4 V 5 6 The distance between cities A and B on a map is 10.75 in. The distance from city B to city C, is 8.75 in, and the distance from C to A is 16.5 in. If the bearing from A to B is N84E, find the bearing from C to A. Round to the nearest tenth of a degree. 16.5 in 8.75 in B A 10.75 in The bearing from city C to city A is approximately (Choose one) (Choose one) X 5 W EThe connector rod from the piston to the crankshaft in a certain 1.0-L engine is 5.6 in. The radius of the crank circle is 2.8 in. If the angle made by the connector rod with the horizontal at the wrist pin P is 23, how far is the wrist pin from the center C of the crankshaft? Round to the nearest tenth of an inch. The distance from the wrist pin to the center of the crankshaft is approximately D in or D in. Solve the equation 4\\ 2 + 8 cosx=0. Write the numbers using integers or simplified fractions. Part: 0 / 2 Part 1 of 2 (a) Over the interval [0,2x). The solution set is O 0,0,... XSolve the equation. Write the numbers using integers or simplied fractions. 5+ sin3x=4 (a) Write the solution set for the general solution. Use 71, where n is an integer. x: The solution set for the general solution is {x (b) Write the solution set on the interval [0, 211:). The solution set on the interval [0, 21:) is D . The refractive index n of a substance is a dimensionless measure of how much light bends (refracts) when passing from one medium to another. 6 n = v where c is the speed of light in a vacuum (a constant) and v is the speed of light in the medium. For example, the refractive index of diamond is 2.42 which means that light travels 2.42 times as fast in a vacuum as it does in a diamond. Snell's law is an equation that relates the indices of refraction of two different mediums to the angle of incidence 01 and angle of refraction 02. Angles 01 and 92 are measured from a line perpendicular to the boundary between the two mediums. Use this relationship and the table of refraction indices to complete the exercises. n1 511101=n2 sm(-)2 Index of Refraction Medium Index Air 1.00029 Water 1.33 0 I Acetone 1.36 1 : Human cornea 1.38 Glycerin 1.47 Sodium chloride 1.54 Sapphire 1,77 Cubic zirconia 2.15 Diamond 2.42 If a beam of light traveling through air enters a sapphire at an angle of incidence of 48, what is the angle of refraction? Round to the nearest tenth of a degree. The angle of refraction 92 is approximately .. A block hangs on a spring attached to the ceiling and is pulled down 11 in below its equilibrium position. After release, the block makes one complete up-and- down cycle in 1 sec and follows simple harmonic motion. (a) What is the period of motion? P=E}sec (b) What is the frequency? f=Ein (c) What is the amplitude? |a|=Iin (d) Write a function to model the displacement d (in inches) as a function of the time t (in seconds) after release. Assume that a displacement above the equilibrium position is positive. The ordered pair (t, 11) gives the displacement d (in centimeters) of an object undergoing simple harmonic motion at time t (in seconds). Suppose that the object has a minimum at (24, 20) and next consecutive maximum at (48, 4-4). (a) What is the period? (b) What is the frequency? (c) What is the amplitude? (d) Write a model representing the displacement d as a function of time t. (a) What is the period? P=-sec (b) What is the frequency? 1 f Hz (c) What is the amplitude? Ial Correct Answer: r. (d) Write a model representing the displacement of as a function of time t. E8 E