Question

I need help on this question, i might need an explanation.

Answer 1

In order to calculate the value of the sine of 40°, let's use a calculator with the value 40 and use the sine function.

We need to check if the calculator is in the "degree" mode, instead of the "radians" mode.

Then, calculating the sine of 40°, the result rounded to two decimal places is:

`\sin40°=0.64`

Therefore the correct option is B.