22-05-2019
Mathematics

contestada

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

Respuesta :

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

Х Find the slope of the line that contains the following pair of points: (1, 2), (5, 2). A. -1 0 B. 0 C. 4 D. Undefined

What is the acceleration of a car that goes from 40km/hr to 80 km/hr in 2 sec?

i will brainliest you please help with last question:) :(

A theory is accepted by scientists when A. It becomes a law B. It can be shown with a model C. It describes how nature works D. It is supported by adequate

Visible, invisible, a fluctuating charm an amber-tinctured amethyst inhabits it, your arm approaches and it opens and it closes; you had meant to catch it and i

Solve the compound inequality. 3x+2>2x−4>x−12

Los fines de semana el profesor de español ________ a la biblioteca. Question 3 options: voy vas va vamos vais van

Solve the following inequality, using the lines to show each step. -3p > -15

Can someone plz help me with question. 2 if you do 3 too I wall mark as brainlist

Jerritt has 5 friend . 2 have video game and the rest have dont have any. He gives Leonard 2 of his video game. Know Jerritt has 2 video game. How many of Leona