![alexdonnelly2123](/avatars/18588.jpg)
alexdonnelly2123
02.07.2019 •
Mathematics
Me, its trigonometry collegeif i fix i can obtain a little points : snumber 4 and 5 i just dont understand : (
Solved
Show answers
More tips
- H Health and Medicine Coughing: Causes, Types, and Treatment Methods...
- H Health and Medicine How to Treat the Flu: A Comprehensive Guide...
- O Other What is a Disk Emulsifier and How Does it Work?...
- H Health and Medicine How to Calm Your Nerves? Expert Tips That Actually Work...
- A Animals and plants 5 Tips for Taking Care of Yews to Keep Them Green and Beautiful...
- S Sport How to wrap boxing hand wraps? Everything you need to know!...
- F Food and Cooking 10 Reasons Why You Should Avoid Giving Re-Gifts: An Informative Guide...
- F Family and Home Tender Care for Your Parquet: Is it Possible to Clean Parquet?...
- S Style and Beauty How Are Eyelash Extensions Applied? All Your Questions Answered...
- F Food and Cooking 10 Tips for Proper Sushi Consumption...
Answers on questions: Mathematics
- M Mathematics The height of a side on a pyramid is 11 inches long, and its square base has sides that are 6 inches long. what is the surface area? 233 in.2 168 in.2 144 in.2 207...
- M Mathematics What is the answer to 4a+96/a+15 and 4a+24/a+15 using 50 as a...
- M Mathematics Mr. gehring has 3/4-pound bag of flour to use for 6 cakes. how much flour is used for each cake?...
- M Mathematics 1. 43 centimeters = blank or blank meter 2. 6 decimeters = blank or blank meter 3. 8 centimeters = blank or blank meter 4. 3 decimeters = blank or blank meter 5. a...
- M Mathematics Fran drew a triangle with no congruent sides and 1 right angle . which term accurately describes ? mark all that apply a. isosceles b. scalene c. acute d. right...
- M Mathematics Which of the following statements are never true? three points are coplanar two planes meet in exactly one point opposite rays form a line two lines that lie in a parallel...
- M Mathematics The cordinates of the endpoints of rt are r(-6,-5) and t(4,0), and point s is on rt. the coordinates of s are (-2,-3). which of the following represent the ratio rs:...
- M Mathematics Arectangle s length is 1in longer than it s width and the diagonal has a length of 29in. what are the lengths of the sides?...
- M Mathematics Barbara gets 6 pizza to divide equally among 4 people. how much of a pizza can each person ?...
- M Mathematics Complete the comparison: 3 + 7 ? a. 9 + 4 b. 10 − 2 c. 7 + 3 d. 8 + 2...
Ответ:
4) (a) For these problems, you should take time to familiarize yourself with common fractions that appear on the unit circle.
does not appear in the unit circle unless you take the quotient 1/2 divided by sqrt(3)/2 which gives you 1/sqrt(3) which is the same as sqrt(3)/3. So our numerator is 1/2 and our denominator is sqrt(3)/2.
And remember tangent is just sin/cos. So what degree has sinx as 1/2 and and cosx as sqrt(3)/2? Well, 30 degrees does, but 30 degrees is not within the range we are given. That means they are looking for a sinx that gives us -1/2 and a cosx that gives us -sqrt(3)/2 and that is 210 degrees.
And 210 degrees in radians is 7pi/6.
I hoped that made sense.
(b) This is a lot easier. What angle gives us a cos x of -sqrt(3)/2? According to the unit circle, 150 degrees and 210 degrees does. They usually want these in radians, so the answer is 5pi/6 and 7pi/6, respectively.
5) What quadrant is radian measure 5 in?
Well 2pi or roughly 6.28 is a full circle. And 5 is slightly less than 6.28, so it is probably in quadrant IV.
But to be sure let's change 5 radian to degrees:
5 * 180/pi = 900/pi = 286.48 degrees
286.48 degrees is definitely in Q4, so we are correct.
Ответ:
Chance of getting number greater than 4 on one roll:
Either getting a 5 or 6
2/6 probability
2/6 = 1/3
If we roll the cube 12 times, the probability of getting a number greater than 4 is 1/3 of the time
12 * 1/3 = 4
She is expected to get a number greater than 4, 4 times