Question

Choose the correct alternative:
If `vec"a" = hat"i" + 2hat"j" + 2hat"k", |vec"b"|` = 5 and the angle between `vec"a"` and `vec"b"` is `pi/6`, then the area of the triangle formed by these two vectors as two sides, is

Options

• `7/4`

• `15/4`

• `3/4`

• `17/4`

Answer 1

`15/4`