10th Class
Mathematics
Sample Paper
Maths Olympiad Model Test Paper-19
question_answer
If \[m=a\,{{\cos }^{3}}\theta +3a\,\,\cos \theta {{\sin }^{2}}\theta ,\] \[n=a{{\sin }^{3}}\theta +3a\sin \theta .{{\cos }^{2}}\theta ,\] then the value of \[{{(m+n)}^{\frac{2}{3}}}+{{(m-n)}^{\frac{2}{3}}}\] is: