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 =}(\phi)/(360)*2\pi r \\ \text{Where r = 5, }\phi=30^0\text{ and }\pi=3.14 \\ \text{Length of arc =}(30^0)/(360^0)*2*3.14*5=2.62 \end{gathered}`

Correct statement: 2.62

f) Correct statment