Question

Question 2 of 10 What is the length of side s of the square shown below? 45 6 09 90° O A. 6 O B. 2 O C. 32 O D. 5 O E. 3 OF. 6-12​

Answer 1

C

Explanation:

Using the cosine ratio in the right triangle and the exact value

cos45° =
`(√(2) )/(2)` , then

cos45° =
`(adjacent)/(hypotenuse)` =
`(s)/(6)` =
`(√(2) )/(2)` ( cross- multiply )

2s = 6
`√(2)` ( divide both sides by 2 )

s = 3
`√(2)` → C