Answer:
53°
Step-by-step explanation:
17² = 18² + 20² - 2(18)(20) cos Q
289 = 324 + 400 - 720 cos Q
289 = 724 - 720 cos Q
-435 = -720 cos Q
0.6042 = cos Q
Q = 52.83
The book Kathy is reading is 540 pages long. So far, she has read 405 pages. What percent of the book does she have left to read
2 answers:
You might be interested in