Question

help meeee solve this​

Answer 1

Answer:

60 degree

Step-by-step explanation:

cos theta = 12/ 2*12 = 1/2

theta = 60 degree

Answer 2

Answer:

Step-by-step explanation:

We have,

$\tt{\left|\vec{a}\right|=2\,,\,\left|\vec{b}\right|=12\,,\,and\,\,\vec{a}\cdot\vec{b}=12}$

Let the angle between the vectors be θ

So,

$\sf{cos(\theta)=\dfrac{\vec{a}\cdot\vec{b}}{\left|\vec{a}\right|\cdot|\vec{b}|}}$

$\sf{\implies\,cos(\theta)=\dfrac{12}{2\cdot12}}$

$\sf{\implies\,cos(\theta)=\dfrac{1}{2}}$

$\sf{\implies\,\theta=\dfrac{\pi}{3}}$