Question

Solve for x and y
(picture attached- ignore everything except the angle measurements and the 7)

Answer 1

Consider

Cos 30 = 7/y and
Sin 30 = x/y

And knowing that sin 30 = 1/2 , and cos 30 = sqrt(3)/2, then you can find both x and y.

Answer 2

i dont know the whole sin and cos stuff

Answer 3

Remember soh cah toa.

In a right triangle, for any of the angles that arent 90, say a
sin a = opposite/hipotenuse
cos a = adyacent/hipotenuse
tan a = opposite/ adyacent

In this case, for the 30° angle, opposite = x, adyacent = 7 and hipotenuse = y, so

sin 30 = x/y and
cos 30 = 7/y.

Answer 4

i didn't learn soh cah toa

Answer 5

Well, is good to learn that, is the way for solve this kind of problem.

By the way the answers for your queston are
\[x = 7\sqrt3/3, y = 14\sqrt3/3\]

Just consider this famous triangle and make
\[7=a*\sqrt3\].

Answer 6

is sqr root of 3 divided by 3 simplified?

Answer 7

Actually,

\[7/\sqrt3 =(7\sqrt3)/3 \] and
\[14/\sqrt3 = (14\sqrt3)/3\]

You can´t simplify anymore.

Answer 8

thanks

Answer 9

You´re welcome.