Question

@jhonyy9

Answer 1

hi @shaleiah - how do you think this is a right triangle - yes ? with one second angle = 45 degree - so than the 3rd angle how many degree wiil have ?

Answer 2

the sum of angles of a triangle = ?

Answer 3

90?

Answer 4

the right angle is 90 degree

Answer 5

than you knbow that the sum of angles of a triangles is 180 degree so this mean that the 3rd angle has a measure of --- ?

Answer 6

180-(90+45) = ?

Answer 7

I wasn't instructed to find the missing angle, I have to find the missing side length.

Answer 8

the values of x and y

Answer 9

yes but than you find the missing angle measure you will get somthing importantly

Answer 10

Alright...
45

Answer 11

so than you know that a traingle has an angle by 90 degree and the other two with 45 - 45 degree how you think what triangle is this ?- right and ..... - this will help you much

Answer 12

do you know what mean isoscele ?

Answer 13

Yes

Answer 14

so now than you know that this is a right and isoscele triangle from this result that x=y
yes ?

Answer 15

Yes

Answer 16

sin 45 = ? what side divide what side ?

Answer 17

sinus of an angle = opposite side divide hypothenuse - yes ?

Answer 18

do you can use it here than you know that the value of sin 45 = (sqrt2)/2

Answer 19

\[\frac{ 9\sqrt{2} }{ 2 }/\sin(45)\]

Answer 20

?

Answer 21

so you can writing

sin 45 = (9sqrt2 / 2 ) / x

yes - oposite side divide hypothenuse

Answer 22

can you calculi the x from this ?

Answer 23

9 :)

Answer 24

so you know that sin 45 = sqrt2 /2

sqrt2 ( 9sqrt2/2)
---- = ---------
2 x


x = 2(9sqrt2/2)/sqrt2

x= 9 -- right

than you know that x=y so this mean that y=9 too

Answer 25

Yes

Answer 26

@shaleiah there is samthing wrong because x not can being equal y because this mean that thia is triangle equilateral what has 3 angles equales by 60 degree and 3 sides equale too
and this triangle not is so

Answer 27

sqrt2 9sqrt2/2
---- = --------
2 x

xsqrt2 = 9sqrt2

x=9 this is right sure

Answer 28

@AihberKhan do you agree?

Answer 29

@DanJS

Answer 30

now use pythagora and write that

x^2 = (9sqrt2/2)^2 + y^2

81 = 81*2/4 + y^2

y^2 = 81 - 81/2

y= sqrt(81/2)

y= 9sqrt2 / 2

do you understand it please ?

Answer 31

Yes

Answer 32

Option a

Answer 33

@shaleiah this is right sure - ok than you understand it

so bye

was my pleasure

good luck

Answer 34

not a. - x=9 and y= 9sqrt2 /2

Answer 35

Yes, sorry. C

Answer 36

Thank you for your help!!

Answer 37

ok

was my pleasure

Answer 38

yes i agree , ,

1) The two legs are equal, they have the same angle opposite them

2) In 45-45-90 triangle, side ratios 1 - 1 - root(2), the hypotenuse is root 2 of a leg length

Answer 39

thats it, Y is the same as the other side, and X is root 2 times that, or 9