Starting with the identity sin 2 + cos 2 = 1 and the formulas for

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Starting with the identity sin2 θ + cos2 θ = 1 and the formulas for cos (A + B) and sin (A + B), show how a variety of other trigonometric identities may be derived.

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Thomas Calculus Early Transcendentals

ISBN: 9780321884077

13th Edition

Authors: Joel R Hass, Christopher E Heil, Maurice D Weir

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