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Tutors Answer Your Questions about Trigonometry-basics (FREE)
Question 154449: I posted a question previously but worded it wrong.
It was supposed to be find the values of the six trigonometric functions of an angle O(the o with the line through it) in standard posistion whos terminal side passes through point P
with P being (-7,24)
Click here to see answer by stanbon(26297)   |
Question 155308: (Please Help...midnight deadline!)I really need to understand this type of problem (I'll give 2 examples):
Simplify the expressions below.
(a) For -00 < t < 00,
cos( tan^-1( t ))=____________
(b) For -1 < w < 1,
cot( cos^-1( w ))+____________
I understand that cos=adj/hyp and tan=opp/adj, but what is the relationship of cos to tan^-1 in this problem? I also understant limiting the range (ie. b), just not the relationship between cot and cos.
Appreciate any help I can get ...thanks.
Click here to see answer by stanbon(26297) |
Question 155588: I don't understand this problem. Please help!!!!
Your employer offers you a choice of wage scales: a monthly salary of $3200 plus commission of 7% of sales or a salary of $3700 plus a 5% commission. At what sales level would the options yield the same salary?
Click here to see answer by ankor@dixie-net.com(6693)  |
Question 155903: What are the values of the indices i and j for the element that is in the fifth column and fourth row?
a. 4, 5, respectively
b. 5, 4, respectively
c. Either 4, 5 or 5, 4; they are interchangeable
d. There are no elements in matrices
Click here to see answer by Fombitz(2113)  |
Question 156052: If, in a system of three linear equations, it turns out that one row is a multiple of another row, then this means that these linear functions are:
a. indeterminate
b. inconsistent
c. intersecting
d. nothing; you made an error in your calculations
Click here to see answer by SAT Math Tutor(36) |
Question 156302: hello im a homeschool parent and i really need our help
Find the lowest common denominator for each of the sets of fractions
1. 4 5
- ,-
5 12
2. 3 1 5
- ,- ,-
4 3 9
3. 2 7
---- , ------
a^2 b^2 a^5 b
4. 5x^2 14xy 3
------ ------ -------
3y^3 8z^2 9xy^2
5. 2r 7s 15t
------, ------ , ------
35st 5r^3 t^5 7r^7 s^5
6. xy 3y 2x
------ , ------- ,------
(x+y)^2 (x+y)^3 x+y
7. 2 7 9
---, ---, -------
3 ab 3a+3b
8. 4 3
---------- , --------
x^2 + 5x + 6 x^2 - 4
9. 17a 11a^2
----------- , ------------
a^2 - 2a - 3 a^2 - 4a + 3
10. x y+2 y^2
------------- ,------------- ,-------------
x^2 + 3x - 4 x^2 + 5x - 6 x^2 + 10x + 24
11. 5 y+2 y^2
----------- ,------------ ,-------------
y^2 - 25 y^2 + 8y + 15 y^2 - 2y - 15
12. 2x 3y
--------- ,---------
x^2 - y^2 2x + 2y
13. 5 2 3
------ ,------ , ----------
a^3 + 8 a^2 - 4 a^2 - 2a + 4
Change the following fractions to equivalent fractions with the lowest common denominator
14. 4 2 8
--, -- ,---
5 3 25
15. 5 12 4
---- ,----- ,-----
x^2 y xy^2
16. 3a 4b c
----- ,----- ,-----
2b 7c 3a
17. x 2x 1
-------- ,-------- ,---------
x^2 - 36 x - 6 x + 6
18. 5 11
----------- ,-----------
a^2 - 5a - 14 a^2 - a - 6
19. y+2 y-2
-------- ,------------
y^2 - 1 y^2 + 2y + 1
20. z 1 2z
----- ,----- ,------
x-y x+y y-x
21. xy x y
-------------- ,------- ,----------
x^2 + xy + y^2 x - y x^3 - y^3
Click here to see answer by oscargut(682)  |
Question 156361: A car is traveling at a speed of 45 miles per hour. Find the angular velocity of a tire in revolutions per minute if the diameter of each rim is 13 in. with 4 in. of tire between the road surface and each rim.
Click here to see answer by stanbon(26297) |
Question 156483: 2 cars race around a circular track, in opposite directions, at constant speeds. They start at the same point and meet every 30.0 seconds. If they move in the same direction, they meet every 120.0 seconds. If the track is 1800 meters long, what is the speed of each car?
Click here to see answer by ankor@dixie-net.com(6693) |
Question 156584: The wheel of a truck is turning at 6 revolutions per second. The wheel is 4 feet in diameter.
A. Find the angular velocity of the wheel in radians per second.
B. Find the linear velocity in feet per second of a point on the rim of the wheel.
Click here to see answer by Alan3354(6097)  |
Question 156188: If event A is required for event B to exist, and event B is required for event A to exist, then we can definitely say:
a. the events are mutually dependent
b. the events are mutually inclusive
c. the events are mutually exclusive
d. the events are mutually independent
Click here to see answer by jojo14344(1483) |
Question 157863This question is from textbook 
:  This is from a worksheet my teacher gave me. He made the problems up in his head. I didn't bring my book home with me, so I didn't know the edition number or chapter number. Sorry.This question is from textbook
Click here to see answer by vleith(1977) |
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