Jee Main
Vector Algebra
JEE Main 2021 (Online) 25th July Evening Shift
MCQ+4 / -12021
If \(\left| {\overrightarrow a } \right| = 2,\left| {\overrightarrow b } \right| = 5\) and \(\left| {\overrightarrow a \times \overrightarrow b } \right|\) = 8, then \(\left| {\overrightarrow a .\,\overrightarrow b } \right|\) is equal to :