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,
[tex]\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}[/tex]
Correct statement: 2.62
f) Correct statment
