Question

There is three question 1 ,2,3 can you answer all three please

Answer 1

a) Correct

b) Incorrect. Correct statement: cos(2∅) is an even function

c) Incorrect. Correct statement: Dot product of two vectors is scalar

d) Incorrect. Correct statemennt: sin(∅) > 0

e) Incorrect. Correct statement is shown below,

$\begin{gathered} \text{Length of arc =}\frac{\phi}{360}\times2\pi r \\ \text{Where r = 5, }\phi=30^0\text{ and }\pi=3.14 \\ \text{Length of arc =}\frac{30^0}{360^0}\times2\times3.14\times5=2.62 \end{gathered}$

Correct statement: 2.62

f) Correct statment