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????? ?ℎ?? sin(?) = −2/√28 ,??? ? ?? ?? ?ℎ? 4?ℎ ????????, ???? ????? ?????? of:...

????? ?ℎ?? sin(?) = −2/√28 ,??? ? ?? ?? ?ℎ? 4?ℎ ????????, ???? ????? ?????? of:
a) cos A
b) tan A
c) sin 2A
d) cos 2A
e) tan 2A

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