julia260906 julia260906
  • 13-11-2022
  • Mathematics
contestada

If cos x = -2/5, what is the value of cos 2x?

Respuesta :

Otras preguntas

A laboratory technician needs to make a 72​-liter batch of a 20​% acid solution. How can the laboratory technician combine a batch of an acid solution that is p
Elements are _____. a chemical substance composed of atoms of two or more different types of atoms substances that are made up of only one type of atom subatomi
Which of the following describes a population that is distributed evenly across an area A.random B.uniform c.clumped d.crowded
(85 POINTS!) A nerve signal is like a wave. How does this work? A: An electrical wave moves down the axon by electrons moving from the place the signal starte
I accept the Nobel Prize for Peace at a moment when 22 million Negroes of the United States of America are engaged in a creative battle to end the long night of
identify the gerund and identify it as a subject, a predicate noun, a direct object, or an object of a preposition. Or identify the sentence as one with no ger
What corresponds to a pressure of 1.23atm
For a report to focus on the needs of typical business readers today, it needs to be trustworthy, contain decision-related information, and: A. put the summa
Solve for x. 6(x – 1) = 9(x + 2)
Which of the following is equivalent to 0.01? A.10^00.1 B.10^-2 C.10^-1 D.10^1