Periodic Phenomena

**Tessarina** · September 16th 2011, 01:16 AM

PLEASE HELP!
Show that:
(cosA/1+sinA)+(1+sinA/cosA) simplifies to 2/cosA

**CaptainBlack** · September 16th 2011, 01:24 AM

Originally Posted by Tessarina

PLEASE HELP!
Show that:
(cosA/1+sinA)+(1+sinA/cosA) simplifies to 2/cosA

1. Put in sufficient brackets to make you question statement unambiguous.

2. Lets assume you mean: Simplify:

$\frac{\cos(A)}{1+\sin(a)}+\frac{1+\sin(A)}{\cos(A) }$

Put everything over a common denominator and simplify. The only trig involved is knowing that $(\sin(A))^2+(\cos(A))^2=1$

CB

**HallsofIvy** · September 16th 2011, 03:50 AM

This was also posted under "Prealgebra and Algebra".

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