Question

In the triangle, x = 3. Find y.

Answer 1

have you studied Pythagoras theorem

Answer 2

?

Answer 3

no not yet

Answer 4

ok you want to solve this using sin and cos

Answer 5

you should have done it right?

Answer 6

@dedderick the formula for pythagoran theorem is

Answer 7

you can use the sin rule or the cos rule

Answer 8

ok

Answer 9

how which side to square

Answer 10

i meant what side do we square

Answer 11

i will give you the answer and then prove it for you

Answer 12

then i can understand it better

Answer 13

if x =3 in your case then y=\[3\sqrt{2}\]

Answer 14

now you should know that \[\sin 45 = \cos 45=\frac{ 1 }{ \sqrt{2} }\]

Answer 15

right

Answer 16

In any right triangle, you can use the Pythagorean Therom to solve for sides. In that triangle, x is 2 of the sides and equals 3.
Pyhtagreons Therom is a^2+b^2=c^2
A and b are the x's in the diagram. So 3^2 + 3^2 is equal to 18= c^2
Then find the square root of 18 to solve.

Answer 17

do you agree with that rule

Answer 18

yes i understand now

Answer 19

the guy says he hasn't done Pythagoras theorem