Answer:
acute: 7, 9
right: 8, 10
obtuse: 5, 6
Step-by-step explanation:
When you have a number of identical calculations to do, it is convenient to do them in a spreadsheet. You only need to enter the formula once and copy it as many times as needed.
The attachment shows the "sum of squares" calculation and comparison to the square of the longest side. When the sum is too small, the longest side is longer than needed for a right angle, so the triangle is obtuse. When the sum is too great, the longest side is too short for a right angle, so the triangle is acute.
We have skipped the tedious arithmetic and shown the results in the attached table.
When any point say (x,y) is rotated 270 degree counterclockwise then it changes to (y,-x).
So for any image, you can collect given coordinate points
then apply above formula like if given point is (1,3) then it will change to (3,-1) after 270 degree counterclockwise rotation.
Answer:
d
Step-by-step explanation:
i jut did it in google calculator (trust me)
A sphere? You know this isn't really a mathematical question right?