The value of tan a is 2.9098
Explanation:
The given value is 
Now, we shall find the value of sin (a), using the identity,

Substituting the value of cos (a), we get,

Subtracting both sides by 0.1056, we have,

Taking square root on both sides, we get,

Now, we shall substitute the value of sin (a) and cos (a) to determine the value of tan (a) in the identity 

Thus, the value of tan (a) is 2.9098
Answer: 40x
First, let's find f(2x)

Using this, let's find g(f(2x)):

That's the answer. Let me know if you need any clarifications, thanks!
6 Gardner’s because 48/8=6
Add 3 to both sides. This will give you 2x = 7.
Then from there, you will divide by 2 to give you x = 3.5