904151 904151
  • 22-05-2019
  • Mathematics
contestada

If cos x = sin(20 + x)° and 0° < x < 90°, the value of x is
°.

Respuesta :

Danutz98
Danutz98 Danutz98
  • 22-05-2019

cos x = sin(20 + x)

sin(90-x) = sin(20+x)

=> 90-x = 20+x => 2x = 70 => x = 35

We need only x ∈ (0,90) so this is the only answer.

Answer Link

Otras preguntas

Is 51/100 greater than 5/10
What happens to the temperature, density, and pressure when you descend from the crust to the inner core
What does assisting a customer mean to you?
During world war ii, this aircraft assembly plant put over 28,000 georgians to work building b-29 bombers.
A manufacturing company produces 98 items in a week. how many items do they produce in a day
The structures found in a living cell can be compared to the parts of a factory that produces cars. Which part of the factory is most similar to the nucleus of
(sin(x))(cos(x)) = 0 on [0, 2π)
Recently nasa has launched space probes to explore mars. why might mars have been chosen for these explorations?
i just need to know how to do these questions in the picture above^?
The point on the business cycle where real GDP reaches its highest level is known as the________.