TMUA Practice Question — Worked Solution

P2·Trigonometry·5.5Mock 0 · P2 · Q3

necessary and sufficientsine symmetryperiodicitygeneral angleradians

In this question

A

and

B

are real numbers, and angles are measured in radians. A multiple of

π

means

k π

for some integer

k

, which may be negative or zero; an odd multiple of

π

is one in which

k

is odd.Which one of the following is a necessary and sufficient condition for

sin A = sin B ?

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