Given:

A. sin(x)

B. cos(x)

C. cos(y)

D. sin(y)

Use the drop-down menus in the derivation of the sine sum identity:

sin(x + y)

= cos (StartFraction pi Over 2 EndFraction minus (x + y))

= Cosine ((StartFraction pi over 2 EndFraction minus x) minus y)

= Cosine (StartFraction pi Over 2 EndFraction minus x)
A
+ Sine (StartFraction pi Over 2 EndFraction minus x)
A

sin(x)cos(y) + cos(x)sin(y)

Question

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Respuesta :

william3556 william3556 · Answer 1 · 2021-01-19T23:24:58+01:00

Answer:

C

D

NEXT ASSIGNMENT

D

B

Answer Link

ibiscollingwood ibiscollingwood · Answer 2 · 2021-11-26T08:38:00+01:00

Trigonometric functions can be simply defined as the functions of an angle of a triangle.

The basic trigonometric functions are sine, cosine, tangent, cotangent, secant and cosecant.

sine sum identity: [tex]sin(x+y)=sin(x)cos(y)+cos(x)sin(y)[/tex]

In sine sum identity , sin(x), cos(x), sin(y) and cos (y) is used.

Some identities shown below,

[tex]sin(x-y)=sin(x)cos(y)-cos(x)sin(y)\\\\cos(x-y)=cos(x)cos(y)+sin(x)sin(y)\\\\\\cos(x+y)=cos(x)cos(y)-sin(x)sin(y)\\\\[/tex]

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