amansour10 amansour10
  • 03-06-2020
  • Mathematics
contestada

Find the value of x if sin80 = Cos(90-x)

Respuesta :

ahmedelkazaz42
ahmedelkazaz42 ahmedelkazaz42
  • 03-06-2020

Answer: 80

Step-by-step explanation:

Sin x = cos (90-x)

Like sin 30 = cos (90-30) =cos 60

So

90-x=90-80

Then

X=80

Verify your solution by finding the sum of the angles of sin and cos, it will be 90

Answer Link
devishri1977
devishri1977 devishri1977
  • 03-06-2020

Answer:

Step-by-step explanation:

Sin Ф = Cos (90 - Ф)

Comparing with this

Sin 80 = Cos (90 - 80) = Cos 10

So, x = 80

Answer Link

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