# Understand the problem

Cauchy Schwarz Inequality is a powerful tool in Algebra. It was beautiful geometric implications as well. Watch the video and solve the tutorial problems to delve deep into the idea.

# Tutorial Problems!

Can you simply square both sides and prove this ?

2. Show that if A, B are any two points in the plane and O is the origin then cosine of the angle AOB is the ratio of $$ \frac{\text{dot product of the coordinates}} {\text{product of their distances from origin}} $$

# Now watch the discussion video

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#### Math Olympiad Program

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