Cosθ is 3/5 because the cosine is found from the adjacent side of the triangle being divided by the hypotenuse. The sine is found by putting the opposite side from θ over the hypotenuse. If you draw this triangle out, the side across from θ would be 4 and the hypotenuse 5. In order to find the opposite side, you could either solve with the pythagorean theorem (a^2+b^2= c^2) or you could remember the properties of a triangle, therefore the final side is 3. You then put the opposite, 3, over the hypotenuse,5, in order to get 3/5 for the cosθ.
Triangle is equal 180 degrees. Given values, 70 + 35 = 105
Meaning, you find what ‘more’ degrees are needed to get 180
180 - 105 = 75 degrees
70 + 35 + 75 = 180
x = 75
Those factors are:
1,2,4,7,8,14,28,56
For the limit to exist, the limits from either side must also exist and be identical. We have
Since the limits do not match, the overall limit does not exist.
This is impossible to answer without the scatterplot. Look at the point where the person scored 81, from there "draw" a straight line down to the bottom line, where it should answer how long the student studied for.
