Asked by Sunil Soni | 19th Oct, 2016, 01:15: PM

Expert Answer:

We extend OA, such that it makes an angle of 45° with the horizontal.
begin mathsize 12px style From space the space figure comma space cos space 6 degree 0 space equals space OA over 20
rightwards arrow OA space equals space 20 space cos space 60 degree space equals space 10
straight V subscript rain equals fraction numerator 10 over denominator cos space 45 degree end fraction equals 10 square root of 2 end style

Answered by Yashvanti Jain | 21st Oct, 2016, 03:12: PM