Quote:
Originally posted by rihannafan
the second one , you simply replace cot-1 byt cot
About to upload the first one.
|
Thank you so much! I understand the first one, except I don't understand why the final answer is an absolute value.
And I still don't understand how to solve. cot^-1(1). I understand that it's the same thing as cot=1 or 1/tan=1, but I don't know haw to use the special triangles to find that exact value if it's cot. I only know it for cos, sin and tan.