For problem 2, I used the trigonometric identity .
This results in the expression .
When you multiply it out you get this:
,
which simplifies to .
1) 2sin^2 x+sin2x=1 find x for 0<x<pi
2) prove that (1+tan )(1+tan( /4- ))=2
3) prove
I've been working on this all afternoon and my solution still doesn't match with the answers
,
after this step I got
am I right or wrong? and could u explain how to simplify down to 2+2tan /1+tan please?
sorry I'm not very familiar with the codes...
I just worked that out... thanks again... now anyone could tell me where to start on the other 2 questions pls?
Hello,
1) 2sin^2 x+sin2x=1 find x for 0<x<pi
This is the same as
Now, you can think of several ways to solve it. Please show your work
Is it or ?
(you don't need to write / if you use \frac{...}{...})
Get the common denominator and simplify.
But it is easier to see it this way :