00:01
The solar declination delta at solstice is 23 .45 degree.
00:15
Since 3 pm is 3 hours after solar noon.
00:29
The hour angle s is equal to 15 degree per hour.
00:34
The hour angle is the angle between sun's rays and local meridian which is changes by 15 degree for every hour of solar time.
00:57
Therefore, the altitude angle given by the expression sin beta is equal to cos of l multiplied by cos delta multiplied by cos h plus sin l multiplied by delta.
01:30
Here l is equal to 40 degree, delta is equal to 23 .45 degree and h is equal to minus 45 degree.
01:46
Therefore, sin beta is equal to cos 40 degree multiplied by cos 23 .45 degree multiplied by cos minus 45 degree plus sin 40 degree multiplied by sin 23 .45 degree.
02:16
By calculating we get 0 .4968 plus 0 .2557 is equal to 0 .7525.
02:36
Therefore, beta is equal to sin inverse 0 .7525 is equal to 48 .8 degree.
02:49
The sin of azimuth angle is given by the expression sin phi s is equal to cos delta multiplied by sin h multiplied by cos beta...