Question

What is the length of side s of the square shown below?

Answer 1

A. √2
B. 2
C. 1
D. 2√2
E. 4
F. 4√2

Answer 2

What's so special about 45-45-90 triangle? Think about that.

Or you can use Pythagorean theorem.

Answer 3

yeah but i dont know what to do?

Answer 4

is it 10√2??

Answer 5

cos 45=?

Answer 6

cos?

Answer 7

yep cosine 45

Answer 8

so its 4√2?

Answer 9

first answer my question!

Answer 10

i dont understand you!!!

Answer 11

do you know trigonometric ratios?

Answer 12

Apparently, he doesn't know trigonometry yet.

Answer 13

Try use Pythagorean theorem.

Answer 14

Pythagorean theorem: \(\large a^2 + b^2 = c^2\)

Answer 15

then use the property of 45-45-90 triangle

Answer 16

Either way works. I recommend you to use the property of 45-45-90 triangle. It's easier.

Answer 17

Got it? @Danny_Boy