Question

*If L - M - N and d(L,M) = 2, d(L,N) = 8 then find d(M,N).* 1️⃣ 6 2️⃣ 10 3️⃣ 4 4️⃣ 16​

Answer 1

Answer:

If l, m, n are the direction cosines of a straight line, then prove that l^2 + m^2 + n^2 = 1 .