303 Answered Questions for the topic triangles

10/21/16

What is cos(90°-x°)?
In a right triangle, one angle measures x°, where sin x°=5/13. What is cos(90°-x°)?
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Triangles

10/13/16

Each of the equal angles of an isosceles triangle is twice as large as the third angle. What is the measure of each angle?
an isosceles triangle has 2 equal sides and angles 
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Triangles Geometry Proofs Angles

10/13/16

Two-colmn Proof - Geometry - Please Help ASAP
This is supposed to be a two column proof. It has statements on one side and reasons on the other.   Given:Triangle ABC with angle C is right angle Prove:Angle A and angle B are... more
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10/04/16

Find the measures of the three angles.
One angle of a triangle is 45° greater than the smallest? angle, and the third angle is 5° less than twice the smallest angle. Find the measures of the three angles.
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10/01/16

Suppose a triangle has side lengths PQ, QR, and PR, where PR = 2PQ = 3QR. Write the angle measures in order from least to greatest.
 triangle
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09/30/16

Triangle problems
A right triangle has angles which measure 30,60 and 90 degrees. If the perimeter of this triangle is 15+5*3^(1÷2). Then the length of the hypotenuse of this triangle is= ?
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Triangles

09/20/16

the measure of three angles equal 180
The measure of the smallest angle of a triangle is one-fifth the measure of the largest angle. The measure of the second angle is 62degrees° less than the measure of the largest angle. Find the... more
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Triangles

09/18/16

In the triangle ABC DE parallel BC if AD =x DB=x-2 AE=x+2 EC=x-1 find the value of x
Plzz just solve this   
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Triangles

09/15/16

how many triangles can be constructed with these exact dimensions
in triangle STU, t=7,s=11 and the measure of angle T=42 degrees and 20 minutes. 
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Triangles Geometry Algebra Angle

09/13/16

What is the value of x? - Show Work
A triangle has one interior angle that measure 45°, another interior angle that has measure x°, and an exterior angle that has measure 85°, as shown below. What is the value of x?
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Triangles

09/12/16

in triangle pqr ....... if m is the midpoint of qr than prove that PQ+PR>2PM
M is the midpoint and no more information is given
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Triangles

09/01/16

IN TRIANGLE ABC GIVEN THAT AB=b ,BC=b,AC=c ,also 60<angle A>90 .then show that c<a>root2 c ?
CLASS 9TH  MATHS  CHAPTER NAME TRAINGLES  CBSE BOARD DELHI INDIA 
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Triangles

08/26/16

A TRAINGLE ABC IS RIGHT ANGLED AT A .AL IS DRAWN PERPENDICULAR TO BC.PROVE THAT ANGLE BAL = ANGLE ACB
CLASS- 9TH CBSE BOARD INDIA  CHAPTER NAME - TRAINGLES
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Triangles Trigonometry Angles

08/22/16

I'm so confused with this, please help me! TRIGONOMETRY
1-2. Roxy and Heaven are standing at the seashore 10 miles apart. The coastline is a straight line between them. Both can see tuhe same ship in the water. The angle between the coastline and the... more
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Triangles Formula Proof Angles

08/22/16

Why does height=a (sin C)?
In a random triangle why is it the formula A=ab (sinC)? Why does it work
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Triangles Geometry

08/12/16

A right triangle has a hypotenuse that is 3 feet longer than one leg. The other leg is 4 feet.
Please explain how you solved it.
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07/20/16

PLEASE ANSWER ALL THREE WUESTIONS COMPLETELT ASAP
1.) a flagpole casts a 24 foot long shadown when the sun is at an angle of elevation of 65 degrees. how tall is the pole?2.)a painter needs to reach high up the side of a house to finish a painting... more
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07/20/16

Pythagorean theorem
Determine the lengths of the unknown sides in the following triangles using the Pythagorean theorem:   1) Leg A= x Leg B= 8 Hypotenuse= 10 2) Leg A= m Leg B= 3.6 Hypotenuse= 6.0 3) Leg A= y Leg... more
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Triangles

07/19/16

how to find other sides of a triangle with one side
I'm so stressed out over a stupid math question.
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06/10/16

Equilateral triangle
An equilateral triangle DEF has sides of x cm and height h cm. show that the area of ΔDEF is ((√3)/4)x^2 cm^2   Please show the full working. 
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Triangles Math Math Help Triangle

06/10/16

Need help for this question (important!)
a rare stamp in the shape of an equilateral triangle FGH has sides of 2cm. find the perpendicular distance from F to GH.    please show the full working and answers. 
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Triangles Math Math Help Triangle

06/10/16

Pythagoras Theorem
In the figure, PQ=13cm, PR=12cm, PS=18cm and PR and QR are perpendicular to QS and PS respectively. Calculate the length of QS. (P is at the top point of the triangle, Q is at the bottom left and... more
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Triangles Math Help

06/04/16

What are the measures of the angles of the triangle in degrees?
The sides of a triangle measure 3√2 meters, 3 meters, and 3 meters. What are the measures of the angles of the triangle in degrees?
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Triangles Math Help Length

06/04/16

What's the length, in inches, of the shortest side of a similar triangle that has a perimeter of 36 inches?
The lengths of the sides of a triangle are 3, 4, and 5 inches. What's the length, in inches, of the shortest side of a similar triangle that has a perimeter of 36 inches?
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Triangles

06/02/16

triangle sides
In two similar triangles side a of the first triangle corresponds to side c of the second triangle, and side b of the first triangle corresponds to side d of the second triangle. If a = 10, c = 30,... more
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