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Mathematics 17 Online
OpenStudy (anonymous):

2. A boat is crossing the river as shown. To the nearest tenth of a degree, find the angle at which the boat must head upriver in order to travel directly across the river. The diagram is not drawn to scale. https://www.connexus.com/content/media/456845-2232011-25832-PM-87452468.png A. 70.3 north of west B. 19.7 north of west C. 19.7 south of west D. 70.3 south of west

OpenStudy (blake57roger):

c

OpenStudy (anonymous):

do you go to connections?

OpenStudy (blake57roger):

what

OpenStudy (anonymous):

do you go to connections academy?

OpenStudy (blake57roger):

no im home schooled

OpenStudy (anonymous):

could you help me with a few more?

OpenStudy (blake57roger):

sure

OpenStudy (blake57roger):

post them

OpenStudy (anonymous):

3. find the angle of elevation of the sun from the ground to the top of a tree when a tree that is 10 yards tall casts a shadow 14 yards long. round to the nearest degree.

OpenStudy (anonymous):

@blake57roger

OpenStudy (blake57roger):

T[,90 degree right angle,,10 height,14 shadow,] The angle B can be found using the inverse tangent function. B=ata((opp)/(adj)) Substitute in the values of the adjacent (14) and opposite (10) sides to angle B of the triangle. B=ata((10)/(14)) Take the inverse tangent of (10)/(14) to get 0.6202. B=0.6202 radians To convert radians to degrees, multiply by (180)/(`), since a full circle is 360^(o) or 2` radians. B=0.6202*(180)/(`) degrees Multiply 0.6202 by (180)/(`) to get (111.6449)/(`). B=(111.6449)/(`) degrees ` is approximately equal to 3.1416. B=(111.6449)/(3.1416) degrees Divide 111.6449 by 3.1416 to get 35.5377. B=35.5377 degrees

OpenStudy (blake57roger):

did that help

OpenStudy (anonymous):

yes thanks! im about to post another one

OpenStudy (blake57roger):

k

OpenStudy (anonymous):

Describe the vector as an ordered pair. Round the coordinates to the nearest tenth. https://www.connexus.com/content/media/456845-2232011-30120-PM-61314579.png The diagram is not drawn to scale.

OpenStudy (blake57roger):

hey is the web site so i can see it

OpenStudy (anonymous):

ok ill draw it

OpenStudy (blake57roger):

be cause it says i have to log on

OpenStudy (anonymous):

|dw:1392910345095:dw|

OpenStudy (blake57roger):

what your anwer choises

OpenStudy (anonymous):

-58.1, 50.5 -102, 117.4 -117.4, 102 -50.5, 58.1

OpenStudy (blake57roger):

i cant pick between a and d what do you think

OpenStudy (anonymous):

ummm d?

OpenStudy (blake57roger):

ill right go with that any more problems

OpenStudy (anonymous):

yea

OpenStudy (blake57roger):

post them

OpenStudy (anonymous):

use compass directions to describe the direction of the vector. the diagram is not drawn to scale.

OpenStudy (anonymous):

ill draw it

OpenStudy (anonymous):

|dw:1392911056169:dw|

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