Home › AP EAPCET (Engineering) › Mathematics › Trigonometry: Trigonometric Equations › Find the least period of cos(x/2).
Find the least period of cos(x/2).
Aπ
B2π
Cπ/2
D4π
Answer & Solution
Correct answer: D. 4π
Halving the angle doubles the period of cosine, so 2π ÷ (1/2) = 4π.
Related questions
The solutions of sin θ = 1 are π/2, 5π/2, 9π/2 and so on. Consecutive values differ byThe multiple-angle formula for sin 3A isThe sum sin C + sin D equalsThe product 2 sin A cos B equalsThe expression 1 + tan²x is equal toThe function sin 2x has least periodTangent repeats its values after which smallest interval?What is the smallest period of the function sin x?