Answer:
The answer to your question is below
Step-by-step explanation:
csc α - cot α = 
Work with the left part

Simplify

Multiply by the reciprocal
Simplify

Remember that
sin²α = 1 -cos²α
Substitute the previous equation

Simplify
The identity i proved.
What is the essential question?
Answer:
1137
Step-by-step explanation:
5675+453
6128
Now
7265-6128
1137
The answer is: [B]: " 9 * 10⁻³ " .
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Answer:
5*2+1/2*-2
11/2*-2
-11
Step-by-step explanation: