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Let alpha , beta , gamma parametric ang...

Let `alpha , beta , gamma ` parametric angles of 3 points P,Q and R respectively lying on `x^(2)+y^(2)=1 `. If the length of chords AP, PQ and AR are in GP where A is (-1,0), then `[Given , alpha , beta ,gamma in (0,2pi)]`.

A

`sin""(alpha + gamma)/(4) cos""(alpha -gamma)/(4) ge sin""(beta)/(2)`

B

`sin((alpha + gamma)/(4)) cos((alpha -gamma)/(4)) le sin(beta)/(2)`

C

`sin""(alpha )/(2) sin""(gamma)/(2) ge sin""(beta)/(2)`

D

`sin""(alpha )/(2) sin""(gamma)/(2) le sin""(beta)/(2)`

Text Solution

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The correct Answer is:
A, D
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