Question

will someone please help me!! Ive been needing to get this done asap! medals rewarded thanks:)

find x

a. 9
b. 9sqrt 2
c. 4.5 sqrt 2
d. 18sqrt 2

Answer 1

wouldnt the answer be c?

Answer 2

?

Answer 3

Actually, it's b.

Answer 4

Because of that 45 degree angle, the third side is going to be x also. so,

x^2 + x^2 = 18^2.

Solving for x will give 9 times sqrt(2)

Answer 5

The third side is "x" because the third angle is 45 degrees and you will have an isosceles right triangle.

Answer 6

This comes from the measure of all angles in a triangle add to 180. You were given 45 and 90, so the third is 45. And opposite sides of equal measure angles will be equal.

Answer 7

making sense to you now?

Answer 8

In case you are in a trigonometry course, you can get the same answer by considering that the cos 45 is [sqrt(2)]/2

cos 45 = [sqrt(2)]/2 = x/18

Answer 9

To make this conceptually simpler, you can completely disregard the triangle on the left. Do you see now how we get "b"?

Answer 10

yes omg thank you so uch! your a big life saver!

Answer 11

uw!