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Assertion (A) : If cos(x-y) = 3 cos (x +...

Assertion (A) : If cos(x-y) = 3 cos (x + y) then cotx cotx = 2
Reason (R ) : If `(a)/(b) = ( c)/(d)` then `(a+b)/(a-b) = (c+d)/(c-d)`

A

A is true, R is correct explanation of A

B

A is true , R is true and R is not correcte explanation of A

C

A is true ,R is false

D

A is false, R is true

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The correct Answer is:
A
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AAKASH SERIES-COMPOUND ANGLES-EXERCISE - II
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