Well if we take out area of parlellogram and equate it with 1/2(d1xd2) which we can write as 1/2|d1||d2|sintheta|, i get theta as root(7/9) while the actual answer is cos theta= root (3/10)
A Study Community for Everyone and Everything. We have weekly sessions on Spirituality, Math and Science! JEE, NEET prep? All doubts are crowdsourced. Hare Krishna!
