Test SeriesFree PYQsExamsPricing

JEE Advanced Mathematics question

MathematicsTrigonometric Ratio and IdentitiesJEE Advanced

The number of measures of the angle for which , and are in GP, is

Answer: (D)

Solution

The three terms are in GP iff

2A= A 3A=Missing argument for \tfrac\tfrac12( 4A+ 2A).

Using :

1+ 4A= 4A+ 2A\ ⇒\ 2A=1\ ⇒\ 2A=2nπ\ ⇒\ A=nπ,\ n.

Check: for the terms ar

See the full step-by-step solution

Create a free account to read the complete working (5 steps), and practise questions like this in a timed test.

Create a free account

Question ID VK-110171