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If sin^(-1) (sin(33pi)/7) + cos^(-1)(cos...

If `sin^(-1) (sin(33pi)/7) + cos^(-1)(cos (46pi)/7) + tan^(-1)(-tan (13pi)/8) + cot^(-1)(cot(-19pi)/8) = (api)/b`
where a and b are in their lowest form, then (a + b) is

A

17

B

20

C

23

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
B
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