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Cards (8)
What is the formula for
cos
2
A
\cos 2A
cos
2
A
in terms of
cos
2
A
\cos^2 A
cos
2
A
?
cos
2
A
=
\cos 2A =
cos
2
A
=
2
cos
2
A
−
1
2 \cos^2 A - 1
2
cos
2
A
−
1
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What is another formula for
cos
2
A
\cos 2A
cos
2
A
in terms of
sin
2
A
\sin^2 A
sin
2
A
?
cos
2
A
=
\cos 2A =
cos
2
A
=
1
−
2
sin
2
A
1 - 2 \sin^2 A
1
−
2
sin
2
A
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What is the third formula for
cos
2
A
\cos 2A
cos
2
A
?
cos
2
A
=
\cos 2A =
cos
2
A
=
cos
2
A
−
sin
2
A
\cos^2 A - \sin^2 A
cos
2
A
−
sin
2
A
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What is the formula for
sin
2
A
\sin 2A
sin
2
A
?
sin
2
A
=
\sin 2A =
sin
2
A
=
2
sin
A
cos
A
2 \sin A \cos A
2
sin
A
cos
A
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What is the formula for
tan
2
A
\tan 2A
tan
2
A
?
tan
2
A
=
\tan 2A =
tan
2
A
=
2
tan
A
1
−
tan
2
A
\frac{2 \tan A}{1 - \tan^2 A}
1
−
t
a
n
2
A
2
t
a
n
A
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What is the definition of
tan
A
\tan A
tan
A
?
tan
A
=
\tan A =
tan
A
=
sin
A
cos
A
\frac{\sin A}{\cos A}
c
o
s
A
s
i
n
A
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What is the Pythagorean identity involving
sin
2
A
\sin^2 A
sin
2
A
and
cos
2
A
\cos^2 A
cos
2
A
?
sin
2
A
+
\sin^2 A +
sin
2
A
+
cos
2
A
=
\cos^2 A =
cos
2
A
=
1
1
1
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What is the relationship between
1
+
1 +
1
+
tan
2
A
\tan^2 A
tan
2
A
and
sec
2
A
\sec^2 A
sec
2
A
?
1
+
1 +
1
+
tan
2
A
=
\tan^2 A =
tan
2
A
=
sec
2
A
\sec^2 A
sec
2
A
View source
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