Question

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Answer 1

what is the relationship between sine and cosine angles?

Answer 2

\[\sin \theta = \cos (\frac{ \pi }{ 2 } - \theta)\]
can you work from here?

Answer 3

no, how would I transform the equation into the other format?

Answer 4

Try to replace sin by cos using the above formula in f(x)

Answer 5

assume theta = 4x - pi

Answer 6

what can you do with Sin(4x - pi) ?

Answer 7

3 cos (4x - pi) + 4
?

Answer 8

you forgot that the angle needs to be subtracted from pi/2 to get cosine. correct it

Answer 9

that I don't know how to do. How do I do that?

Answer 10

3cos(pi/2 -(4x - pi)) + 4

Answer 11

Oh, ok; is this the simplified answer?

Answer 12

@rkopen ?

Answer 13

no you need to open the parenthesis within cos and simplify

Answer 14

pi/2 -(4x - pi)

Answer 15

what will that be?

Answer 16

what is a - (b - c) ?

Answer 17

a - (b - c) = a-b+c
similarly, we get pi/2 - 4x + pi
can you add pi and pi/2 ?

Answer 18

@rkopen

Answer 19

did not get that - do you want me to give the answer? I won't do that