simplify sin4cos6 + sin6cos4

Question

directrix · Answer

That looks like the sine of a sum or the cosine of a sum formula.

See attachment. Which one do you think it is.

anonymous · Answer

Sin, dog

anonymous · Answer

AAAAAA wait....is it?

directrix · Answer

Right.

directrix · Answer

sin( ? + ?) = sin4 cos6 + sin6 cos4

Are 4 and 6 in degree measure or in radian measure?

anonymous · Answer

Im thinking it's in radians..........

directrix · Answer

What goes here:   sin( ? + ?)

Look at the formula for the sine of a sum.

anonymous · Answer

Well i don't know.
sine of a sum?

directrix · Answer

I have posted it one in this thread. I'll post it again.

directrix · Answer

^^ Look for sin (A + B)

anonymous · Answer

so we add 4 + 6?

directrix · Answer

Yes.

directrix · Answer

4 + 6= ?

anonymous · Answer

10

anonymous · Answer

what does that mean though? sin of 10?

directrix · Answer

So the answer to the question is what?

directrix · Answer

simplify sin4cos6 + sin6cos4

If you put 10 as the simplified answer, then that is wrong.

anonymous · Answer

uhhhh what do we do with cos??

directrix · Answer

>>cos??   Nothing. 
That is a companion formula for the cosine of the sum of two angles.

You are doing the sine of the sum of two angles.

directrix · Answer

@josegym   And, the answer is ? to this question.

anonymous · Answer

sin10 ?

directrix · Answer

Correct.

I don't know if that is sin(10) radians or sin(10°) or if it matters in the context of the problem.

anonymous · Answer

there is no degree sign so i guess its right! Thanks man or woman or canine! Greatly appreciated!

directrix · Answer

You are welcome.