Answer: The factors of 252 can either be prime or composite. Subsequently, 252 is an even composite number itself which comprises of factors that are either prime or composite.
Step-by-step explanation:
Factor pair Pair factorization
2 and 126 2 × 126 = 252
3 and 84 3 × 84 = 252
4 and 63 4 × 63 = 252
6 and 42 6 × 42 = 252
Pythagorean theorem
x^2 + 5^2 = 10^2
x^2 + 25 = 100
x^2 = 75
x = +sqrt(75), -sqrt(75) = +5sqrt(3), -5sqrt(3)
I used the scientific calculator:
sin 20° = 0.3420
cos 70° = 0.3420
sin 20° and cos 70° are related because they are of equal value, 0.3420.