Question

Y = 14sin²x + 9 cosec²x. Find the range​

Answer 1

Answer:

f(x)=(1+cot

2

x)+25(1+tan

2

x)

=26+cot

2

x+25tan

2

x

26+10+(cot

2

x+25tan

2

x−20cotxtanx) =36+(cotx−5tanx) 2 ≥36

Ans: 36