Verify Trigonometric Identities
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Pythagorean Identities
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sin²(θ) + cos²(θ) = 1
1 + cot²(θ) = csc²(θ)
1 + tan²(θ) = sec²(θ)
Enter θ (°):
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Sum Identities
cos
(
A
+
B
)
=
cos
(
A
)
cos
(
B
)
−
sin
(
A
)
sin
(
B
)
\cos(A + B) = \cos(A)\cos(B) - \sin(A)\sin(B)
cos
(
A
+
B
)
=
cos
(
A
)
cos
(
B
)
−
sin
(
A
)
sin
(
B
)
Enter A (°):
Enter B (°):
Verify
sin
(
A
+
B
)
=
sin
(
A
)
cos
(
B
)
+
cos
(
A
)
sin
(
B
)
\sin(A + B) = \sin(A)\cos(B) + \cos(A)\sin(B)
sin
(
A
+
B
)
=
sin
(
A
)
cos
(
B
)
+
cos
(
A
)
sin
(
B
)
Enter A (°):
Enter B (°):
Verify
Difference Identities
cos
(
A
−
B
)
=
cos
(
A
)
cos
(
B
)
+
sin
(
A
)
sin
(
B
)
\cos(A - B) = \cos(A)\cos(B) + \sin(A)\sin(B)
cos
(
A
−
B
)
=
cos
(
A
)
cos
(
B
)
+
sin
(
A
)
sin
(
B
)
Enter A (°):
Enter B (°):
Verify
sin
(
A
−
B
)
=
sin
(
A
)
cos
(
B
)
−
cos
(
A
)
sin
(
B
)
\sin(A - B) = \sin(A)\cos(B) - \cos(A)\sin(B)
sin
(
A
−
B
)
=
sin
(
A
)
cos
(
B
)
−
cos
(
A
)
sin
(
B
)
Enter A (°):
Enter B (°):
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