+0

# help

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156
6

algebra

Dec 15, 2018

#1
+700
0

\(-\dfrac{2}{5}\)

- PM

Dec 15, 2018

#1
+700
0

\(-\dfrac{2}{5}\)

- PM

PartialMathematician Dec 15, 2018
#2
+700
0

Wait for someone else's answer to confirm. I am not 100% sure.

PartialMathematician  Dec 15, 2018
#3
+103947
+2

Note that  tan (2pi - x)  =

sin (2pi - x)          sin2pi * cosx - cos2pi *sinx

_________  =    _______________________  =

cos (2pi - x)       cos2pi *cosx + sin 2pi * sinx

- sin x

_____   =

cos x

- 2 / sqrt (29)

___________   =

5 / sqrt (29)

-2/5

Just as PM found.......!!!!

Dec 15, 2018
#4
+700
0

Why is mine the best answer? I forgot to explain, and your answer, CPhill, explained everything clearly and brilliantly. I give CPhill's answer the title of Best Answer.

PartialMathematician  Dec 15, 2018
#5
0

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Dec 15, 2018
#6
+700
-1

??? um

PartialMathematician  Dec 16, 2018