Divide each side by 11 to get X by itself and your answer:
11x=33
11/11x=33/11
x=3
Would 104/2 work? You get 52 which is the same as 24+28.
Answer:
When you see a formula like this, try to operate, so you will see some identities sooner or later. In this case, we have a substraction identity:
\frac{cos ( \alpha - \beta )}{cos \alpha cos \beta } = \frac{cos \alpha cos \beta + sin \alpha sin \beta }{cos \alpha cos \beta } = 1 + tan α · tan β
Step-by-step explanation:
