Trigonometric EquationEasy
Question
The function f(x) = tan-1(sinx + cosx) is an increasing function in
Options
A.
B.
C.
D.
Solution
f′(x) = 
(cos x - sin x)
f(x) is increasing if
hence f(x) is increasing when x ∈
(cos x - sin x) f(x) is increasing if
hence f(x) is increasing when x ∈
Create a free account to view solution
View Solution FreeMore Trigonometric Equation Questions
The maximum distance from origin of a point on the curve x = a sin t - b siny = a cos t - b cos, both a, b > 0 is...If tan + 2tan + 4 cot , then n - 2m is :-...sec2 θ = is true if and only if...If A = sin2 x + cos4 x , then for all real x...If sin x + sin2 x = 1, then cos12x + 3cos10 x + 3cos8x + cos6x - 2 is equals to -...