Question

what is the list value of 4tan² thita+9cos²thita​

Answer 1

Answer:

This problem can be solved using the AM-GM inequality…..

For those who don't know what AM -GM inequality means, it is simply denoted as: ( a+b)/2≥ √(a.b) where a,b >0

Let a= 4tan^2 theta

And let b= 9cot^2theta

Then, according to AM-GM inequality