Step-by-step explanation:
Use trigonometry (shown in image below) to find the 3 side-lengths:
According to right triangle trigonometry:
cos θ =
Substitute in the values:
answer: finding the extract measurements and knowing the points
step-by-step explanation:
let x and 400 - x be the two numbers.
==> 0.80x + 0.85(400 - x) = 400 - 68 from the statement of the problem.
< ==> 0.80x + 0.85(400 - x) = 400 - 68
==> 340 - 0.05x = 332
< ==> -0.05x = -8 ==> x = 160, the first number ==> 400 - x = 240, the second number.