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We can use the law of cosines here. ( remember, side b is opposite angle B) DEGREE MODE!
b^2 = a^2 + c^2 - 2ac cos(B)
16^2 = 10^2 + 12^2 - 2(10)(12) cos(B)
256 = 244 - 240(cos B )
12 = -240(cos B )
-0.05 = cosB
arcos(-0.05) = B
B = 93 degrees
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∙ 13y ago
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What triangle measures 6 in 8 in 10 in and with a 90 degree angle?
Every triangle with sides of 6 in, 8 in and 10 in will have a 90 degree angle.
Triangle ABC is a right triangle. If side AC is 7 units and side BC is 10 units what is the measure of side AB?
By using Pythagoras' theorem for a right angle triangle if side AB is the hypotenuse it is the square root of 149 which is about 12.207 rounded to three decimal places
Must a triangle with two acute angles be a right angle?
No. For example, say the two angles are 10° and 20°. Then the other angle is 180°-10°-20°=150° and that is not a right angle. But if the triangle has two equal acute angles of 45 degrees then the 3rd angle must be 90 degrees which will form a right angle triangle.
Triangle abc is an equilateral triangle bc equals 10 what is the length of ad give your answer to the nearest whole number?
5
What is the area to the nearest integer of a triangle with dimensions of 10 cm by 11 cm by 15 cm?
Let the sides be abc and their opposite angles be ABC Angle C: (10^2 +11^2 -15^2)/(2*10*11) = 91.04179885 degrees Area: 0.5*10*11*sin(91.04179885) = 54.99090834 Area to the nearest integer = 55 square cm
What is the A coordinate Triangle ABC is reflected over the x-axis. Triangle ABC has points A (10 2) B (8 3) and C (6 4). What is the A' coordinate?
It is (10, -2).
Abc is a right triangle if ac is 4 and bc is 10 what would ab equal?
Since the right angle is not identified, the answer is either sqrt(84) or sqrt(116) units.
What triangle measures 6 in 8 in 10 in and with a 90 degree angle?
Every triangle with sides of 6 in, 8 in and 10 in will have a 90 degree angle.
Triangle ABC is a right triangle. If side AC is 7 units and side BC is 10 units what is the measure of side AB?
By using Pythagoras' theorem for a right angle triangle if side AB is the hypotenuse it is the square root of 149 which is about 12.207 rounded to three decimal places
In triangle ABC with right angle at C if a equals 10 cm and angle B equals 59 degrees then c equals 11.67 cm Rounded-off to two decimals?
Absolutely not!If C is the right angle, then by conventional notation, c is the hypotenuse and so is the longest side!
Triangle ABC is reflected over the x-axis. Triangle ABC has points A (10, 2), B (9, 5), and C (6, 4). What is the B' coordinate?
(9, -5)
Triangle ABC is reflected over the x-axis. Triangle ABC has points A (10, 2), B (9, 5), and C (6, 4). What is the C' coordinate?
(6, -4)
Triangle abc is an equilateral triangle bc equals 10 what is the length of ad give your answer to the nearest whole number?
5
How do you find the area of a right triangle that is 5feet x 8feet x 10 feet?
The given dimensions are not compliant for the construction of a right angle triangle but the area of any triangle is: 0.5*base*height
What triangle has sides 7 8 10?
This is a scalene triangle as it has no equal sides or angles. It is not a right angle triangle.
Must a triangle with two acute angles be a right angle?
No. For example, say the two angles are 10° and 20°. Then the other angle is 180°-10°-20°=150° and that is not a right angle. But if the triangle has two equal acute angles of 45 degrees then the 3rd angle must be 90 degrees which will form a right angle triangle.
What are the angles inside a triangle having dimensions of 1 dm by 120 mm by 9 cm?
Let the dimensions be 10 cm by 12 cm by 9 cm and call them abc with their opposite angles being ABC:- Using the cosine rule angle A = 54.64 degrees Using the cosine rule angle B = 78.14 degrees Angle C: 180 -54.64 -78.14 = 47.22 degrees
