False- the included angle must be a right angle for cos C to be 0 & two other points are normally used
Answer:
Sorry I don't know that one
Answer:

Step-by-step explanation:
The difference between two consecutive elements is 11.

Hence 
Answer:
Step-by-step explanation:
2 csc²x-2 csc x-1=0
or

Answer:
the answer will be 8
Step-by-step explanation:
pls give me brainliest