Solution: To be high, it is obtained by combining three lines:

The center line with height △

According to Pythagorean theorem:

h^2=88^2-32^2=6720

h~=82

Give a brief answer.

1 1. Find the length of hypotenuse ab.

∠∠c = 90°

According to Pythagorean theorem:

ab？ =ac？ +bc？ =4+bc？

∠∠a = 30

Let bc=x,

Then ab=2x

(2 times)? =4+x？

Solution: x=2/3

Shuanggen 3

Then ab=2x=4/3.

Shuanggen 3