Answer:
cot(x)
Step-by-step explanation:



Recall the Pythagorean Identity 
Answer:
Um... Don't see the question but here's the answer
Step-by-step explanation
90 has more squares because 0.90 has one more 0 in it and it has 9th of the 10ths than 9
Answer:
-7 - 8n
Step-by-step explanation:
Another way would be to rearrange the terms = -7 - 8n