Q. यदि x = r sin A cos B, y = r sin A sin B तथा z = r cos A हो तो x² + y² + z² = ?

Math question with Easy calculation

Q.2454 : यदि x = r sin A cos B, y = r sin A sin B तथा z = r cos A हो तो x² + y² + z² = ?

Right Ans : r²