Then b-a= 1/5.
Answer? +b? = 1
A=3/5 b=4/5 to solve this system of equations.
∴sinθ=3/5 cosθ=4/5
The equivalent relationship between sinθ and cosθ: sinθ=(3/4)cosθ.
tanθ=3/4
(2) Logarithmic (3/4) radix (x x- 1) ≥ 0
∴x^x- 1≥ 1
x^x≥2