kyatu7l3laramonN kyatu7l3laramonN

19-11-2016
Mathematics

contestada

find the exact value of : cos(2 arctan(4/3))

Respuesta :

nobillionaireNobley nobillionaireNobley

22-11-2016

cos(2 arctan(4/3)) = cos(2 arccos(3/5)) = cos^2(arccos(3/5)) - sin^2(arccos(3/5)) = cos^2(arccos(3/5)) - sin^2(arcsin(4/5)) = (3/5)^2 - (4/5)^2 = 9/25 - 16/25 = -7/25.

Answer Link

Otras preguntas

Where should sinks be available for food service worker?

1) A book contains 192 pages. A boy reads x complete pages everyday.if he has not finished the book after 10days, find the highest possible value of x

What is the other side of the following DNA strand: ACCTGGTAACGT

According to the Supremacy Clause, Group of answer choices Congress has the responsibility to regulate interstate commerce. states must recognize any legal agre

A region that features a high water table has... A. Wet winters and dry summers B. Underground water close to the surface of the land C. Wet summers and dry w

Explain the endosymbiotic theory and explain whether it is true with details.

write the tense chart for: The boy play football

In "The Yellow Wallpaper," Charlotte Perkins Gilman's choice of narrator and story structure creates mystery in the story. Explain how the narrator and structur

I think I should give the reason for my being in Birmingham, since you have been influenced by the argument of “outsiders coming in.” . . . Several months ago o

who is the prisendent of Sierra Leone Freetown