The sum of the equation - 990 + 880 +90 +790 +690 + 60, is found as follows;990 + 880 +90 +790 +690 + 60= (990 + 880) + (90 +790) + (690 + 60)= ( 1870 ) + (880 ) + ( 750 )= 3500Answer = 3500
complementary angles are two angles that have a sum of 90*. example. 30* + 60* = 90* that would be a complementary.
Yes, because their sum is 90 degrees.
31 + 59 = 90
Since the sum of the two complement angles is 90⁰ , then the complement of a 60⁰ angle is a 30⁰ angle.
Since the sum of the two complement angles is 90⁰ , then the complement of a 60⁰ angle is a 30⁰ angle.
If half of the sum is 90 then the full sum must be 180. The three consecutive multiples of 10 which add up to 180 are 50, 60 and 70.
Add all of the numbers together (find the sum of the set) 50 + 60 + 70 + 80 + 90 + 100 = 450. Then divide the sum by the amount of numbers in the set (6); 450 / 6 = 75.
The sum of the internal angles of a quadrilateral is 360 degrees. Therefore given the three angles 60, 120, and 90, the fourth would be (360) - (60 + 120 + 90) = 360-270 = 90 degrees
Average is the sum of all values over number of values.(55+60+155)/3270/3 = 90
isosceles * * * * * In the Euclidean plane such a triangle could not exist, because the sum of its angles exceeds 180 degrees.
Total sum of angles in a triangle is equal to 180 degrees . Right triangle has a 90 deg. angle so 180-90= 90-30 = 60. The three angles are 90 60 and 30 degrees. == ==