Whats not affected by the
others outcome
Answer:
The working is done in the image attached.
The answer is 2x+6
Explanation: 2 times 3 is 6 and 2 times x is 2x
Answer:
See the proof below
Step-by-step explanation:
For this case we need to proof the following identity:

We need to begin with the definition of tangent:

So we can replace into our formula and we got:
(1)
We have the following identities useful for this case:


If we apply the identities into our equation (1) we got:
(2)
Now we can divide the numerator and denominato from expression (2) by
and we got this:

And simplifying we got:

And this identity is satisfied for all:
