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Assertion (A) : tan 70^(@) - tan 20^(@) ...

Assertion (A) : `tan 70^(@) - tan 20^(@) = 2 cot 40^(@)` Reason (R ) : If A + B = `90^(@)` then tan A. tan B = 1

A

A is true R is ture and R is corect explanation of A

B

A is true, R is true and R is not correct 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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