What should 30 degrees do, how did 30 degrees come about

All along, what are you doing when you are moved by such a classic passage? I'm looking up at the sky. What is a 30 degree look-up?

It's the angle I miss him. Why raise your head to 30 degrees? In order not to let my tears fall......Joe told me that looking up at 30 degrees was not enough to silence the tears, but I believed that this wonderful 30 degrees was enough to hide all my crispness, all my helplessness, all my sorrow, I believed.

Tears can really linger, and heaven can't compare to your slight smile at me, if even the tears have been dried, then where should I go, I know that my world is only desolate, and I remember my own personal signature: indifference is my only expression, loneliness is my destiny in this life, I am a piece of ice that refuses to melt. I believe that my eyes are so empty at this moment that there is not a single tear.

A boy asked me this"Why do you like him? "At that moment, I chose silence, my best way to escape, because I don't even know the reason, I am a child who loves to dream, but I fell in the world of dreams, if I have a choice, I hope I can hide my sadness in the past and love. There was helpless bitterness in the 30-degree gaze, I closed my eyes, and the warmth ended without a problem.

Forgive me for my crispness, stopping time, stopping everything.

1 lap 12 blocks 360 degrees, 1 hour is 1 block, 30 degrees.

Because it's an equilateral triangle.

According to the vertical diameter theorem, the right angle is obtained.

Because the vertical foot is the midpoint of the radius, the ratio of the right side to the hypotenuse in that right triangle is 1:2

It's 30°

Simple. Because the triangle ABC is all equal to the triangle AC'b', angle cab = 75 degrees, cc'Parallel ab

So the angle acc'= Angle cab, Angle c'ab'= angle cab = 75 degrees, Ling fiber volt ac'=ac

So the triangle acc'It is an isosceles triangle.

So the horns are pure cac'= 30 degrees.

So horn bab'= 30 degrees to carry.

Because the angle BOD is 45°, and the angle BOD = 3 times the angle of the open peili doe, so 45° 3 = 15°, so the angle of the middle tank EOB = 30°. Beg!