Variable stars are ones whose brightness varies periodically. One of the most visible variable stars is R Its brightness (a relative measure) is modeled by the formula below where t is measured in days. 8(t) = 7.9 -2.3cos(5 O 156 O 312 O 2π How often does the brightness cycle repeat itself (in days)? IT 156 O 365 6t). O 156

Q: A cosine function has a period of , an amplitude of 4, and a vertical translation 3 units down. The…

A:

Q: Plot the 12 values on a graph. The number corresponding to the month is the first coordinate of each…

A:

Q: Find a possible formula for the trigonometric function whose values are in the following table. 3 6.…

A: Given: x 0 3 6 9 12 15 18 y 1 -3 1 5 1 -3 1

Q: Determine the amplitude of the function y = 2 sin x. Graph the function and y = sin x. ..... The…

A: Topic = Functions

Q: Evaluate without using a calculator. 7x cos-1(cos X Need Help? Submit Answer Read It

A: Given;  Cos-1[Cos(7pi/4)].

Q: Find all values of the given quantity. (Enter your answers as a comma-separated list.) cos-¹(1) n =…

A: We will use that  cos θ = 1 for θ = 2nπ  ,where n = 0, ±1, ±2, ±3, ...

Q: amplitude only applies to the sine and cosine functions O the reciprocal trig functions have no…

A: We are given four statements. Our job is to determine the false statement. For this, we shall check…

Q: 4. Use the triangle to write All trigonometric functions, if A = 7, B= 24, and C = 25. 8

A:

Q: Find the function value. cos 0.8215

A: Our Aim is to find the function value of cos (0.8215).

Q: Which function is periodic? A

A:

Q: 0.00:004 006 008 01 0.11 014/06 The graph above shows a sound recorded on an oscilloscope. What are…

A: The time period is the time taken to complete one cycle of the wave. Amplitude is defined as the…

Q: 4. The height a Ferris Wheel rider is above the ground can be modelled by the function h(t) = -20…

A: Note : multiple questions are given so according to our answering guidelines we can only solve first…