 Hi friends, I am Purva and today we will discuss the following question. If vector A is equal to vector B plus vector C, then is it true that mod of vector A is equal to mod of vector B plus mod of vector C? Justify your answer. Let us now begin with the solution. Now we have to tell whether this statement mod of vector A is equal to mod of vector B plus mod of vector C is true or not? And our answer is no. Because we are given that vector A is equal to vector B plus vector C, this is given to us. Now if we take vector A, vector B and vector C as the three sides of a triangle, then by taking mod on both the sides we get mod of vector A is equal to mod of vector B plus vector C. And this implies mod of vector A is less than mod of vector B plus mod of vector C. That is the sum of two sides is greater than the third side in a triangle. And this contradicts the given statement that mod of vector A is equal to mod of vector B plus mod of vector C. So we get our answer as no. So we write our answer as no. And this is when we take vector A, vector B and vector C to represent the sides of a triangle. This is our answer. Hope you have understood the solution. Bye and take care.