Answer:
1/2
Step-by-step explanation:
It rises 1 and goes 2 units to the left, which is what rise/run means
And a tip:
I can tell you're using Goggle Forms. If you hit ctrl + U, you can find the answers to the questions in the code
Rewriting the left hand side,
csc²t - cost sec t
= (1/sin²t)-(cost)(1/cost)
= 1/sin²t - 1
= 1/sin²t - sin²t/sin²t
= (1-sin²t)/sin²t
= cos²t/sin²t
= cot²t