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Topic:
Trigonometry  Proving trigonometric identities
Replies:
3
Last Post:
Dec 19, 2004 8:36 PM




Re: Trigonometry  Proving trigonometric identities
Posted:
Dec 19, 2004 8:34 PM


In article <ksnbs0lc0nei5ff1jue4m6gg10u7bkjg2c@4ax.com>, Robert Evans wrote: > How do you prove the following identity: > > cosA * cotA + sinA = cscA
Try multiplying both sides by sin(A) and simplifying the fractionssee it it looks more familiar then.
 Kevin Karplus karplus@soe.ucsc.edu http://www.soe.ucsc.edu/~karplus Professor of Biomolecular Engineering, University of California, Santa Cruz Undergraduate and Graduate Director, Bioinformatics (Senior member, IEEE) (Board of Directors, ISCB starting Jan 2005) life member (LAB, Adventure Cycling, American Youth Hostels) Effective Cycling Instructor #218ck (lapsed) Affiliations for identification only.
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