Verify that the following are identities (see Example 6). (a) (1 + sin z) (1 - sin

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Verify that the following are identities (see Example 6).
(a) (1 + sin z) (1 - sin z) = 1/ sec2 z
(b) (sec t - 1) (sec t + 1) = tan2 t
(c) Sec t - sin t tan t = cos t
(d) Sec2 t - 1/sec2 t = sin2 t
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Calculus

ISBN: 978-0131429246

9th edition

Authors: Dale Varberg, Edwin J. Purcell, Steven E. Rigdon

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