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Find the complement of an angle of 38 degrees?
I found it! It's 52 degrees.
What is the area of the sector formed by central angle of 120 degrees and a radius of 5?
A central angle of 120 is 1/3 of the total circle. Aea of a circle = pi x r2, so for this sector the area is (1/3)pi x r2 = (1/3)(3.14)(52) = 26.17
How can ratios be written?
A ratio is a comparison of two numbers. You can write a ratio in these ways: a to b, a : b, or a/b. Ratios are often written as fractions. A ratio that is expressed as a fraction is generally written in lowest terms. If the ratio involves unit of measure, you must ensure that the units are the same. Example: Write ratios in lowest terms. 20/52 = (20/4)/(52/4) = 5/13 240/200 = (240/40)/(200/40) = 6/5 There are continued ratio, or extended ratio, which relates more than two numbers. Example: The measures of the angles of a triangle are related by the ratio 3 : 4 : 5. Find the measure of each angle. Solution: The ratio 3 : 4 : 5 is equivalent to 3x + 4x + 5x. We write an equation by using, 3x, 4x, and 5x to represent the measures of the angles. The sum of the angles of a triangle is 180 degrees. So, 3x + 4x + 5x = 180 12x = 180 x = 15 Thus, the measures of the angles are 45 degrees, 60 degrees, and 75 degrees.
What is A triangle with angles that measure 103 degrees 52 degrees and 25 degrees?
It is an obtuse scalene triangle.
Two angles are complementary the sum the measure of first angle and one-fourth of the second angle is 84º what are the angles?
Answer: first angle =52 degree, second angle = 128 degree. Solution: x+y=180 (1) x+y/4=84 now multiply both sides of last equation by 4: 4x+y=336 (2) subtract (1) from (2), ie. find (2) - (1): 4x-x + y-y = 336-180 3x=156 dividing last result by 3: 3x/3=156/3 x=52 substitue in eq. (1): 52+y=180 y=180-52=128
