eirjie eirjie
  • 08-08-2021
  • Mathematics
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Help me please.No spammmers.

Help me pleaseNo spammmers class=

Respuesta :

HuyMaiSweetie
HuyMaiSweetie HuyMaiSweetie
  • 08-08-2021

Answer:

C

Step-by-step explanation:

cot =cos/sin =a/b

cos=a/b*sin

(sin-cos)/(sin+cos) =(sin-sin*a/b)(sin+sin*a/b)

=(1-a/b)/(a+a/b)

=(b-a)/(a+b)

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