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Assertion (A) : If z = ilog (2 - sqrt3) ...

Assertion (A) : If z = ilog `(2 - sqrt3)` then cos z= 2
Reason (R) : `cos h theta = (e^(itheta ) + e^(itheta))/(2)`

A

Both A and R are true R is correct explanation to A

B

Both A and R are true but R is not correct explanation of A

C

A is true R is false

D

A is false R is true

Text Solution

Verified by Experts

The correct Answer is:
C
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AAKASH SERIES-COMPLEX NUMBERS-EXERCISE -II
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  14. If |z- 25i| le 15 , then |maximum arg (z) - minimum arg (z)| equals

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  15. The complex number z =1 + i is rotated through an angle 3pi//2 in anti...

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  17. Assertion (A) : The origin and the roots of the equation x^(2) + ax + ...

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  18. Assertion (A) : If z = ilog (2 - sqrt3) then cos z= 2 Reason (R) : c...

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