Question

1. The ratio of length of a tower and its shadow is 1 : 1. Find the angle of elevation of
2. If the sum of first n natural number is 2n² + 3n then find its second term.
12 solid spheres of the same size are made by melting a solid​

Answer 1

Step-by-step explanation:

If the ratio of the height of a tower and the length of its shadow is √3 :1, then the angle of elevation of the Sun is 30º.