斜边=√（32²+4²）≈32.25小的锐角=arcsin(4/32.25)≈7.12°大的锐角=arcsin(32/32.25)≈82.88°
斜边长=√（32²+4²）≈32.25锐角1=arctg（4/32）=arctg0.125=7.125°锐角2=90°-7.125°=82.875°
