I have a couple problems I cannot solve, please help me!
1. tan(x)/sec(x) + cot(x)/csc(x) =sin(x)+cos(x)
2 (1-tan(x))^2 = sec^2(x) - 2tan(x)
3. sin(x)/csc(x)-1 + sin(x)/csc(x)+1 = 2tan^2(x)
4. sin(x)[sec(x)-csc(x)] = tan(x)-1
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I have a couple problems I cannot solve, please help me!
1. tan(x)/sec(x) + cot(x)/csc(x) =sin(x)+cos(x)
2 (1-tan(x))^2 = sec^2(x) - 2tan(x)
3. sin(x)/csc(x)-1 + sin(x)/csc(x)+1 = 2tan^2(x)
4. sin(x)[sec(x)-csc(x)] = tan(x)-1
Most of these types of things can be solved if you remember these definitions and identifies:
(1)
(2)
(3)
(4)
(5)
In addition to those, you sometimes need to look up double-angle formulas and a few similar things.
I'll do #1. You try the others.
substituting from #2, #3, #4, and #5:
qed
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