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:
Answer:
x^2(squared) +2x+1
Step-by-step explanation:
Answer:
This is what i get
Step-by-step explanation:
Answer: 894
Step-by-step explanation:
Alternate Interior Angles