Trigonometry Teacher Resources
Combine the triangle and the Cartesian coordinate grid to produce Trigonometry. Trig functions, complex numbers, identities, vectors, and real life applications like circuits are here to energize your classroom.
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CK-12 Foundation
Ck 12: Trigonometry: Angles of Rotation in Standard Positions
[Free Registration/Login may be required to access all resource tools.] Learn how to express angles of rotation.
CK-12 Foundation
Ck 12: Trigonometry: Coterminal Angles
[Free Registration/Login may be required to access all resource tools.] Defining and identifying coterminal angles.
CK-12 Foundation
Ck 12: Trigonometry: Definition of Inverse Reciprocal Trig Functions
[Free Registration/Login may be required to access all resource tools.] Define reciprocal function.
CK-12 Foundation
Ck 12: Trigonometry: De Moivre's Theorem
[Free Registration/Login may be required to access all resource tools.] Simplify complex numbers raised to a power with DeMoivre's Theorem.
CK-12 Foundation
Ck 12: Trigonometry: Distance Between Two Polar Coordinates
[Free Registration/Login may be required to access all resource tools.] Find the distance between two points expressed in polar coordinates.
CK-12 Foundation
Ck 12: Trigonometry: Double Angle Identities
[Free Registration/Login may be required to access all resource tools.] Derivation of double angle identities for sine, cosine, and tangent.
CK-12 Foundation
Ck 12: Trigonometry:complex Roots
[Free Registration/Login may be required to access all resource tools.] Plot the roots of equations in polar coordinates.
CK-12 Foundation
Ck 12: Trigonometry: Heron's Formula
[Free Registration/Login may be required to access all resource tools.] Find the area of a triangle when all three sides are known.
CK-12 Foundation
Ck 12: Trigonometry: Identify Accurate Drawings of Triangles
[Free Registration/Login may be required to access all resource tools.] Determine if diagrams of triangles are accurately drawn.
CK-12 Foundation
Ck 12: Trigonometry: Law of Sines
[Free Registration/Login may be required to access all resource tools.] This lesson introduces the Law of Sines for two cases.
CK-12 Foundation
Ck 12: Trigonometry: Length of a Chord
[Free Registration/Login may be required to access all resource tools.] Find the length of a chord of a circle.
CK-12 Foundation
Ck 12: Trigonometry: Length of an Arc
[Free Registration/Login may be required to access all resource tools.] Definition and measurement of an arc on a circle,
CK-12 Foundation
Ck 12: Trigonometry: Proofs of Trigonometric Identities
[Free Registration/Login may be required to access all resource tools.] Simplifying trigonometric expressions using identities
CK-12 Foundation
Ck 12: Trigonometry: Proofs of Trigonometric Identities
[Free Registration/Login may be required to access all resource tools.] This lesson uses trigonometric identities to prove other identities.
CK-12 Foundation
Ck 12: Trigonometry: Pythagorean Identities
[Free Registration/Login may be required to access all resource tools.] Defining trigonometric identities that rely on the Pythagorean Theorem.
CK-12 Foundation
Ck 12: Trigonometry: Quotient Identities
[Free Registration/Login may be required to access all resource tools.] Illustrates identities found from dividing two trigonometric functions.
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