${ \bf{ = \sin(4x) + 2 \sin(2x) }} \\ = { \bf{2 \sin(2x) \cos(2x) + 4 \sin(x) \cos(x) }} \\ { \bf{ = 4 \sin(x) \cos(x) . ({ \cos }^{2} x - { \sin}^{2} }x) + 4 \sin(x) \cos(x) } \\ = { \bf{4 \sin(x) \cos(x) ( { \cos }^{2}x - { \sin }^{2}x + 1) }} \\ = { \bf{4 \sin(x) \cos(x) }(2 { \cos }^{2} x)} \\ = { \bf{8 \sin(x) { \cos}^{3}x }}$

8 0

2 years ago

How do you find largest angle

harina [27]

Answer:

It depends what the other angles are but you take the two add them together and then you subtract it from 360 (IF ITS A QUADRILATERAL) for all other shapes the angles add up to 180

Step-by-step explanation:

4 0

2 years ago

What fraction is £1 of 13p?

Rasek [7]

I believe it would be 13p im not for sure though

4 0

3 years ago

Translate the following into algebraic form: The difference of forty-seven and a number

JulsSmile [24]

Answer:

Number - 47

Step-by-step explanation:

difference means subtract

Number - 47

7 0

2 years ago