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You are not logged in. #1 20130819 12:49:05
Trigonometric IdentitiesProve these: 2. If cosec θ  sin θ = a^{3} and sec θ  cos θ = b^{3}, Then prove that: a²b²(a² + b²) = 1 Last edited by Agnishom (20130819 14:37:06) 'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.' 'God exists because Mathematics is consistent, and the devil exists because we cannot prove it' 'Who are you to judge everything?' Alokananda #2 20130819 16:55:51
Re: Trigonometric Identitieshi Agnishom, That looks like a good way to start with those denominators. Then put everything in terms of sin and cos in order to simplify. The second identity looks somewhat tougher. I'll come back if I make progress. Bob ps. I've made some progress with stereograms. You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei #3 20130819 22:39:22
Re: Trigonometric IdentitiesThanks but I know these Identities. Yet, I am not being able to solve that at all. Please help me out. 'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.' 'God exists because Mathematics is consistent, and the devil exists because we cannot prove it' 'Who are you to judge everything?' Alokananda #5 20130820 00:08:33
Re: Trigonometric IdentitiesI may have gone 'round the houses' to do the second, but it works. In other words, some steps may be eliminated I think. exercise for you: do a similar thing with b^3 evaluate a/b and b/a and substitute all into (1) everything cancels leaving just a 1 Bob You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei #6 20130820 13:50:39
Re: Trigonometric IdentitiesSorry for my late reply. 'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.' 'God exists because Mathematics is consistent, and the devil exists because we cannot prove it' 'Who are you to judge everything?' Alokananda #7 20130820 13:56:33
Re: Trigonometric Identities
Like this? 'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.' 'God exists because Mathematics is consistent, and the devil exists because we cannot prove it' 'Who are you to judge everything?' Alokananda #9 20130820 17:48:19
Re: Trigonometric Identities:d 'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.' 'God exists because Mathematics is consistent, and the devil exists because we cannot prove it' 'Who are you to judge everything?' Alokananda 