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If -pilexlepi,-pileylepi and the cosx+co...

If `-pilexlepi,-pileylepi` and the `cosx+cosy=2` then `cos(x-y)` =

A

`-1`

B

0

C

1

D

2

Text Solution

Verified by Experts

The correct Answer is:
C
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AAKASH SERIES-TRIGONOMETRIC EQUATIONS-Exercise-II
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  12. If alpha and beta are two different solutions lying between -(pi)/(2)...

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  14. In a triangle ABC, angle A gt angle B. If the measures of angle A, ang...

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