oodiel0g oodiel0g
  • 02-01-2020
  • Mathematics
contestada

If sin yº = -and tan yº = 1, what is the value of cos y

Respuesta :

WaywardDelaney WaywardDelaney
  • 08-01-2020

Answer:

The value of cos y° is -1

Step-by-step explanation:

Given as Trigonometrical functions as :

sin y° = - 1

tan y° = 1

Let The value of cos y° = x

Now, As we know

tan [tex]\theta[/tex] = [tex]\dfrac{sin \theta }{cos \theta }[/tex]

So, tan y° = [tex]\dfrac{sin y^{\circ}}{cos y^{\circ}}[/tex]

∴ cos y° =  [tex]\dfrac{sin y^{\circ}}{tan y^{\circ}}[/tex]

Or,  x = [tex]\dfrac{-1}{1}[/tex]

i.e, x = - 1

So, The value of cos y° = x = -1

Hence, The value of cos y° is -1  Answer

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