The sine of 38 degrees is equal to 0.616, rounded to the nearest thousandth. what is the measure of an angle whose cosine is also equal to 0.616?

Explain the answer and how to do it

Rachel reads 1/5 of the pages of a book plus 12 pages on the first day. on the second day, she reads 1/4 of the remaining pages plus 15 pages. on the third day, she reads 1/3 of the remaining pages plus 18 pages. on the fourth day, she reads the remaining 70 pages. how many total pages are in the book?

If 3x+8=3x+8 is it one solution or no solution