Altitude is the angle measured above the horizon.
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solar altitude angle= (90 degree - zenith angle )
A baseball, cannonball, or other projectile launched at a 45° angle above the horizon will achieve maximum horizontal range. A projectile launched straight up will achieve maximum altitude, but you kind of have to watch it and be careful when it returns.
the angle of incidence is the angle measured between the normal and the incident ray.. the angle of reflection is the angle measured between the reflected ray and the normal..
sometimes, the altitude of isosceles triangles resting on their base and equilateral triangles are angle bisectors
A reflex angle