75p is the correct answer because 1 lemon is 15p
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
At first let us choose the 5 points
at x = 0, y = 0
The first point is (0, 0)

We will choose a = 1/2
The points are
(-2, -4)
(-1, -1/2)
(0, 0)
(1, 1/2)
(2, 4)
from least to greatest: 0.85, 8/9 (0.88 as a decimal), 0.93