Question

Let f (θ) = sin θ (sin θ + sin 3θ), then f (θ)

Solution

Correct option is

≥ 0 for all real θ

 

          

for all real θ.

SIMILAR QUESTIONS

Q1
Q2

    

Q3

If θ and ∅ are acute angles such that sin θ = 1/2 and cos ∅ = 1/3 and cos ∅ = 1/3, then θ + ∅ lies in

Q4

The value of tan 3α cot α cannot lie in

Q5

For a given pair of values x and y satisfying x = sin αy = sin β, there are four different values of z = sin (α + β) whose product is equal to

Q6

 

value of α is

Q7

  

      

Q8

If 0 < A < π/2 the value of the expression

   

Q9

The value of the expression