Questions on Geometry: Triangles answered by real tutors!

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Question 254166: Can you please explain which formula (sin, cos, or tan) would be used to solve this and why (and help solve too)??? I'm soooo confused here??? Thanks sooo much!
The angle of elevation of a 15-ft ladder is 70°. Find out how far the base of the ladder is from the wall.
Click here to see answer by Alan3354(30993)

Question 254412: Mr.Miller has a 20 foot ladder which he wants to reach 18 feet up the side of his house. To the nearest foot, how far from the base of the house should he place the ladder?
Click here to see answer by checkley77(12569)

Question 254476: If two sides of the triangle above have lengths 5 and 6, the perimeter of the triangle
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Question 254556: if the base of a triangle is 8x + 16 and the height is 1/(x+2) what is the area of the triangle?
Click here to see answer by dabanfield(803)

Question 254628: The perimeter of a triangle is 75 units. The sides have lengths a, b, and c. The ratio of b to a is 3:5, and the ratio of c to a is 7:5. Find the length of each side.
Click here to see answer by drk(1908)

Question 254711: Special Right Triangles:
45-45-90 Triangle and the 60-30-90. Can you explain to me how to do it B/c I'm Lost On that part. Can you take it step by step. My teacher cannot teach and I'm in need of help. On this specific part. Send me a few examples. I have a quiz tomorrow so I need this asap.
Click here to see answer by drk(1908)

Question 254895: Use a coordinate grid to plot ΔABC with vertices having coordinates A(2,6), B(18,2), C(12,12). Is this isosceles, right or equilateral? Where is the midpoint of AB?
Click here to see answer by CharlesG2(828)

Question 254902: A triangle has two sides of length 7 and 9. What value could the length of the third side be
Click here to see answer by edjones(7569)

Question 254902: A triangle has two sides of length 7 and 9. What value could the length of the third side be
Click here to see answer by CharlesG2(828)

Question 254902: A triangle has two sides of length 7 and 9. What value could the length of the third side be
Click here to see answer by drk(1908)

Question 254928: in this triangle, side AC=12, side BC=16, and side AB=20, is triangle ABC a right triangle?
Click here to see answer by richwmiller(9135)

Question 254965: the ratio of the angle measures in a triangle is 5:12:19. what is the measure off the largest angle? the ratio of the angle measures in a quadrilateral is 1:4:5:6. what is the measure of the smallest angle?
Click here to see answer by drk(1908)

Question 255082: i need to find the value of x for the degree of a triangel. one corner is 64degrees. the outside of another corner is 123 degrees. the x is on top. i hope this makes sence
Click here to see answer by Alan3354(30993)

Question 255144: If the perimeter of a rectangle is 20 inches, give five possible areas and the dimensions for each.
Click here to see answer by checkley77(12569)

Question 255144: If the perimeter of a rectangle is 20 inches, give five possible areas and the dimensions for each.
Click here to see answer by dabanfield(803)

Question 255341: if the hypotenuse of a right triangle is 30 cm long and one leg is twice as long as the other, how long are the legs of the triangle?
Click here to see answer by richwmiller(9135)

Question 255367: A median of a triangle is a segment from ? to the midpoint of the opposite side.
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Question 255400: The ratio of the angle measures in a triangle is 1 : 6 : 13.
What is the measure of each angle?
Click here to see answer by stanbon(57308)

Question 255408: two vertical poles have heights 4 m and 12 m a rope is stretched from the top of each pole to the bottom o fthe otehr how far above the ground do the ropes cross?
Click here to see answer by scott8148(6628)

Question 255407: two vertical poles have heights 4 cm and 14 cm a rope is stretched from the top of each pole to the bottom of the other how far above the ground do the ropes cross?
Click here to see answer by ankor@dixie-net.com(15649)

Question 255613: A triangle has sides which are 9, 40, and 41 millimeters long. How could you determine if this triangle is or is not a right triangle?
Click here to see answer by Alan3354(30993)

Question 255613: A triangle has sides which are 9, 40, and 41 millimeters long. How could you determine if this triangle is or is not a right triangle?
Click here to see answer by drk(1908)

Question 255619: A triangle with a perimeter of 20cm. Two angles are 30 and 50. What are the lengths of the sides in cm.
Click here to see answer by Edwin McCravy(8908)

Question 255635: Use the Pythagorean theorem to solve for x.
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Click here to see answer by Alan3354(30993)

Question 255680: The measures of the two acute angles in a right triangle are in the ratio 2:3. What is the measure of the smallest angle of the triangle?
Click here to see answer by edjones(7569)

Question 255748: what is the area of a right triangle that has legs 7 cm and 4 cm long

Click here to see answer by checkley77(12569)

Question 255791: A surveyor measured a triangular plot of ground and reported the three angles as being 58.2 degrees, 70.0 degrees and 61.1 degrees. How much of an error did the surveyor make?

Click here to see answer by ankor@dixie-net.com(15649)

Question 256008: find the perimeter of right triangle ABC if the legs are 3 inches and 4 inches
Click here to see answer by richwmiller(9135)

Question 256137: Give triangele RST with vertices R(-2,1) S(-1,3) and T(2,1) RS equals ?
I think the square root of 5 but Im not sure if I approched it correectly.
Click here to see answer by richwmiller(9135)

Question 256162: Is a triangle a right, acute, or an obtuse triangle if has the measures 11, 11, and 15?
Click here to see answer by Edwin McCravy(8908)

Question 256168: what is long length of right triangle when a=20inches and b=48 inches
then what is the length of c?
Click here to see answer by solver91311(16877)

Question 256168: what is long length of right triangle when a=20inches and b=48 inches
then what is the length of c?
Click here to see answer by checkley77(12569)

Question 256159: two sides of a triangle measure 6 and 9 find the lengths of the 3rd side
Click here to see answer by Alan3354(30993)

Question 256410: What is the number of sides of a polygon if the measures of its interior angles have a sum of 1,800 degrees.n = ____?
Click here to see answer by drk(1908)

Question 256480: The shorter leg of a 30°–60°–90° triangle is 10. what are the lengths of the longer leg and the hypotenuse, to the nearest tenth?
Click here to see answer by Edwin McCravy(8908)

Question 256483: After flying an altitude of 500 meters a helicopter starts to decend when its ground distance from the landing pad is 11 kilometers. what is the angle of depression for this part of the flight
Click here to see answer by Fombitz(13828)

Question 256571: If two sides of the triangle above have lengths 5 and 6, the perimeter of the triangle could be which of the following
Click here to see answer by unlockmath(1599)

Question 256818: An isosceles triangle has a base of 8 m. The length of the altitude to the base is 3 m. Find the lengths of the congruent sides.
Click here to see answer by drk(1908)

Question 256925: Find the perimeter of a right triangle with shorter sides measuring 5 and 12 units.
Click here to see answer by Fombitz(13828)

Question 256932: Why could a right triangle with integers for lenghths of sides not have shorter sides measuring 5 and 10 units?
Click here to see answer by Fombitz(13828)

Question 257066: Find the dimensions of the figure: (right triangle)
Perimeter = 23
left side = 11-x
right side = 3x-2
bottom = x+2
Click here to see answer by drk(1908)

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