In Pakistan, quite close to the borders with Iran and Afghanistan.
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1 degree = 60 minutes of arc 1/2 o = 60/2 ' = 30'
A 30-60-90 right triangle is one in which the three angles of the triangle 30, 60 and 90 degrees. The length of the sides of such a triangle have the ratio 1:2:square root of 3. The 1 is opposite the 30 degree angle, the 2 is opposite the 60 degree angle and the square root of 3 is opposite the 90 degree angle.
It is a triangle with 90, 60, and 30 degree angles.
90