Bradford T. answered • 12/02/21
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Retired Engineer / Upper level math instructor
Let point (-8√3, 8) be A and (4,4√3) be B and (0,0) be O.
The length of OA = 16.
The length of OB = 8
The length of AB = √320
OA2+OB2 = 256 +64 = 320
AB2 = 320
OA2+OB2 = AB2
So the angle AOB has to be a right angle or π/2.
You can also verify this using the cosine law.
Faris A.
This is the link to the assiment https://ycdsb.elearningontario.ca/content/enforced/19834774-BL_2122Sem1__MAT_MHF4U1- 801259_a_ELO/Grade%2012%20-%20Unit%205%20(Trigonometry%20Assignment)%20(Assignment).pdf?_&d2lSessionVal=NaW02v0p1w0TsNUG3hsl8oYAk These are the questions Please solve with complete steps using grade 12 advanced function methods Answer neatly and clearly all questions in order, on a separate piece of paper (use graph paper where required). Please pay attention to proper format and units where applicable. Show all work and justifications! 1. Determine a sine equation and a cosine equation of the function below. Clearly show or explain how you obtained your values. (5 marks) 2. Rianne draws two points, one at (− 4 3, 4) and the other at (8, 8 3). She then draws line segments from the origin to each point. Using radian measure for all angles, find the exact value for the size of the smaller angle between the two lines Rianne has drawn. Determine without the use of a calculator. Include a diagram in your solution. (5 marks) 3. A Ferris wheel with a diameter of 30 m rotates once every 100 s. Riders board the Ferris wheel using a platform 1.5 m above the ground. (5 marks) a) Draw the graph for two rotations of the Ferris wheel. (Label) b) Write an equation that gives the height of the rider as a function of time. c) Calculate the height of the rider after 2.5 min on the Ferris wheel. Round to 2 decimal places. 4. William loves pizza..especially the crust! If the radius of a pizza is 25 cm, what is the central angle in degrees that gives him 55 cm of crust? (2 marks) 5. θ is an angle in standard position. P(-5, -12) is a point on the terminal arm of θ. Determine the exact value of (cotθ)(secθ)+(sinθ) Include a diagram (3 marks)
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12/09/21
Bradford T.
If you use the cosine law and solve for cos(theta) you get cos(theta)=0 which means theta is one or more multiples of 90 degrees.
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12/10/21
Bradford T.
You should submit the questions separately or schedule a session with a tutor. Note that it is not ethical for tutors to answer test questions.
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12/11/21
Faris A.
Can you do this12/09/21