Question

Write the expression as either the sine, cosine, or tangent of a single angle.

sine of pi divided by two times cosine of pi divided by seven plus cosine of pi divided by two times sine of pi divided by seven.

Answer 1

cos(pi/5)
cos(pi/7)
+sin(pi/5)
sin(pi/7)

Answer 2

\[\sin (\Pi/2)\cos(\Pi/7)+\cos (\Pi/2)\sin(\Pi/7)\]

Answer 3

thats the equation

Answer 4

OH ok

Answer 5

may be the above answer is wrong plz verify

Answer 6

what do you mean?

Answer 7

I would use
sin(a+b)= sin(a) cos(b)+ cos(a) sin(b)

(but "backwards")

Answer 8

how did you get that?

Answer 9

Georgia your done

Answer 10

\[\frac{ \sin \pi }{ 2\cos \frac{ \pi }{ ? }} + \frac{ \cos \pi }{ 2 \sin \frac{ \pi }{ 7 } }\]

Answer 11

No Hawaii we beat you 0 and 55

Answer 12

i dont think youre doing the right thing @dayakar

Answer 13

So shut up Hawaii

Answer 14

ok, i;m sorry

Answer 15

you should get
\[ \sin\left(\frac{\pi}{2}+\frac{\pi}{7}\right) = \sin\left(\frac{9\pi}{14}\right) \]

Answer 16

That's exactly what I got thank you @phi