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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 constant, then `(a+b)` is equal to

A

(a) 17

B

(b) 20

C

(c) 23

D

(d) 26

Text Solution

Verified by Experts

The correct Answer is:
B
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  • cos^(-1) ("cos" (7pi)/6) = _______.

    A
    `(7pi)/6`
    B
    `(5pi)/6`
    C
    `pi/6`
    D
    `(3pi)/2`

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