Question

ILLUSTRATION 2.8
1
Find the minimum value of 2 cos O + + 2 tane , where
O is acute angle.
sin e​

Answer 1

Step-by-step explanation:

=sinθ=cosθ

=cosθ = cosθ

ssin cosθ

=tanθ=1=tan45°

=θ=45

=Therefore, 2tan⁰ +sin² θ−1=2tan⁴ 5° +

sin² 45°−1

=2×(1)²+ ( 1 )² -1 = 2 + 1 −1=3

√2 2 2.