Answers edited by Quoc D.
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How many milliliters of 12.0 M hydrochloric acid (
H
C
l
) is required to prepare 0.75 L of a 0.25 M solution of
H
C
l
?
How do you prove
(
cos
x
)
(
csc
x
)
(
tan
x
)
=
1
?