Question

. If in general, the value of sin A is known
but the value of A is not knwon, then

how many values of tan (A/2) cal
culated?
(a) 1
(b) 2
(c)3
(d) 4​

Answer 1

Answer:

(c) 3

Step-by-step explanation:

sin0° = 0             ∴ tan(0°/2) = 0

sin30° = 1/2        ∴ tan(30°/2) = [requires calculator]

sin45° = 1/√2      ∴ tan(45°/2) = [requires calculator]

sin60° = √3/2     ∴ tan(60°/2) = 1/√3

sin90° = 1            ∴ tan(90°/2) = 1