Trigonometric EquationMedium
Question
The greatest and least value of sin θ cos θ are -
Options
A.1, -1
B.
C.
D.2, -1
Solution
Y = 
sin θ cos θ 
sin 2θ
- 1 ≤ sin 2θ ≤ 1 ⇒ -
sin 2θ ≤ 
Y ∈
sin θ cos θ sin 2θ- 1 ≤ sin 2θ ≤ 1 ⇒ -
sin 2θ ≤ Y ∈
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