Here are a few problems I missed on the test. The professor doesn't show where you missed the problem or anything. Would like to know how to work these:
1) Solve for x:
2) Solve for x:
3) Calculate (give exact answers. i.e. no decimals)
a:
b:
4)Solve for x:
Thanks for any help!
Somehow 2 and 4 he still says are wrong. I think on 4 he wanted us to use the power reducing formulas and on 2, I have no idea, unless he wanted us to use another formula.
I tried working 4 using the power reducing formula and am still having trouble.
Could someone look at these problems again please?
I may be taking pre-calculus again lol
There's no formula to use in #2, per se. You have to recognize the trig functions of special angles. The answer provided by DeMath is correct, but you could also state your answers as
and
, where k is an integer.
(Remember that is coterminal to ).
If the answers are supposed to be in , then shame on you for not stating that in the first place. The answers would then be and .
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