Use basic trigonometric identities to simplify the expression: sin (-x) cos (-x) csc (-x) =?

Step-by-step explanation:

We know by definition that the cosine is an even function, therefore

We also know that the sin is an odd function, therefore

By definition:

Then:

Using these trigonometric properties we can simplify the expression

The answer is:

The simplified expression is:

To simplify the expression we need to use the following trigonometric identities:

We are given the expression:

So, applying the identities and simplifying, we have:

Hence, the simplified expression is:

Have a nice day!

4/6 = 2/3

so it should take 3/3 hours per man. so 9 hours is the answer 3*3 =9

step-by-step explanation: