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0 votes
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in Trigonometry by (25.2k points)
`sin^(-1)(sin((7pi)/6))` is
A. `-pi/6`
B. `pi/6`
C. `(7pi)/6`
D. `-(5pi)/6`

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2 Answers

0 votes
by (25.1k points)
Correct Answer - A
0 votes
by (20 points)

Sin^-1(sin∆)=∆,if -π/2<∆<π/2

sin^-1(sinπ+π/6)

sin^-1(sin-π/6)

-π/6

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