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Tutors Answer Your Questions about Length-and-distance (FREE)
Question 1041842: A 70-inch piece of pipe is to be cut at two points A and B such that A and B are not on the ends of the pipe and the length from A to B is 42 inches. How many possibilities are there for obtaining three pieces of pipe of different lengths if the lengths are whole numbers?
Click here to see answer by josmiceli(19441)  |
Question 1042290: Law of Sines: Triangle question. What is the Distance from point A to point C, given two angles and one length?
Text of the problem reads:
Maya and Juan are standing on a riverbank, 230 meters apart, at points A and B respectively. (See figure). They want to know the distance from Maya (point A) to a house (point C). Maya (point A) measures angle A, angle BAC to be 48 degrees, Juan (point B) measures angle B, angle ABC to be 62 degrees. What is the distance from Maya (point A) to the house (point C)? Round your answer to the nearest tenth of a meter.
I have a .png to upload, but not sure how to upload the .png image.
Precalc_23.png
Since I cannot upload the image: here is a description to draw a diagram:
Draw a triangle and label the vertices A, B and C.
Label point A Maya
Label point B Juan
Label point C the house
Label angle BAC as 48 degrees.
Label angle ABC as 62 degrees.
Label side AB as 230 m
Label side AC as x (since that is what we are looking to find).
I am thinking the easiet way to find x is to use the Law of Sines. But I am not sure how to set up the equation for Law of Sines.
I know it will require that we know what the angle opposite side AB is. Using the fact that the three angles of a triangle add up to 180 degrees we should be able to use the two given angles to find the third one. The third angle, ACB, is 70 degrees.
The unknown angle ACB is 70 degrees: determined because we know a triangle is 180 degrees total. Therefore the given angles of 48 + 62 = 110, gives us the unknown angle located at point C. (Point C is the house in the diagram). 180 - 110 = 70 degrees for point C, (angle ACB). The question is asking what the distance is from point A (Maya) to point C (the house). Distance between point A and B is 230 m. Two sides of the triangle are not labeled with a distance.
Help is appreciated to complete the problem and answer What is the distance from Maya (point A) to the house (point C)?
Click here to see answer by josgarithmetic(39616) |
Question 1043215: Mr. Hershman has purchased a farm that is in the shape of a rectangle. The dimensions of the piece of land are 3.9 km by 5.36 km. How many square kilometers did he buy, and how many hectares did he purchase?
Click here to see answer by ikleyn(52775)  |
Question 1043957: Amacha leaves her office at 8:00 am and drives to
a client's office at an average rate of 80kph.She
spends 2 hours in meeting,takes a 1 hour lunch
and returns to her own office,driving at an average
of 60kph.If she arrives back at her office at 3:00 pm,
how far apart are the two offices?
Click here to see answer by Alan3354(69443)  |
Question 1043957: Amacha leaves her office at 8:00 am and drives to
a client's office at an average rate of 80kph.She
spends 2 hours in meeting,takes a 1 hour lunch
and returns to her own office,driving at an average
of 60kph.If she arrives back at her office at 3:00 pm,
how far apart are the two offices?
Click here to see answer by ikleyn(52775)  |
Question 1044592: A can is in the shape of a right circular cylinder. The circumference of the base of the can is 12 inches, and the height of the can is 5 inches. A spiral strip is painted on the can in such a way that it winds around the can exactly once as it reaches from the bottom of the can to the top. It reaches the top of the can directly above the spot where it left the bottom. What is the length in inches of the strip?
Click here to see answer by Alan3354(69443)  |
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