Question

Find y in these 30 - 60 - 90 triangles

Answer 1

Need to find x and y in radical format but Idk how to go about that

Answer 2

x=7*tan30
y=7*sec30

Answer 3

\[tan30=\frac{x}{7}\]
\[x=7(tan30)\]
you are supposed to know what tan30 is. It's one of those special angles you memorize.
\[x=7(\frac{1}{\sqrt3})\]
\[x=\frac{7}{\sqrt3}\]

Answer 4

Without trig, you should know the ratios of sides in a 30-60-90 right triangle. They are 1-2-sqrt(3). Here's why: