What basic trigonometric identity would you use to verify that sin x cos x tan x =1-cos^(2)x?

Step-by-step explanation:

1. Keeping on mind that , you have:

2. Simplify it, then you obtain:

3. Keeping on mind that , you obtain:

Step-by-step explanation:

We want to verify that;

We take only the expression on the left hand side and work to get the expression on the right hand side.

We cancel the common factors to get;

We now use the Pythagorean identity;

We make the subject to obtain;

as required.

The basic trigonometric identity we used is