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
Answer:
0.04 is as close as it gets
First you must change 60 into a fraction by putting it over 1

×

=

Then you divide the numerator(top) by the denominator(bottom) to get the answer
300÷6=50
Your answer is 50