Question

https://courses.vlacs.org/vlacontent/geometry_v8_gs//assessments-xml/res0078/04_16_84.gif
Find the value of y.

Answer 1

What sort of triangle is this?

Answer 2

a right triangle

Answer 3

right ... and is it scalene or isosceles or .... what?

Answer 4

i think its scalene

Answer 5

I don't think so. What is the size of the angle not marked?

Answer 6

45 and 90 degrees

Answer 7

right, hence the triangle is not scalene, it is ...

Answer 8

isoceles

Answer 9

hence x = what?

Answer 10

5

Answer 11

Right. Now, knowing that, what is y equal to?

Answer 12

10?

Answer 13

No. Use Pythagorus Theorem.

Answer 14

7.07 thank you so much! :)