Bookiesbaby9963 Bookiesbaby9963

02-03-2018
Mathematics

contestada

If sec a = 5/4 and a is an angle in quadrant iv find the value of cos a

Respuesta :

calculista calculista

11-03-2018

we know that
sec a = 5/4
sec(a)=1/cos(a)
then
cos (a)=1/sec(a)
cos (a)=1/(5/4)=4/5---> is positive because the function cos is positive in IV quadrant

the answer is cos(a)=4/5

Answer Link

Otras preguntas

(4x-2)*6(2x+7) in standard form

How did expanding democracy bring Andrew Jackson to power?

Which type of macromolecule is made of amino acids

Quick help, please? What is the significance of the similarities and differences between William Kamkwamba's story and Calvin Stanley's story? All I need to kno

8. Which statement best describes the Richter scale? A. It's named after a scientist who studied tornadoes. B. It's a numerical rating system that measures

Is choosing 5 players to represent the team at a fundraiser a permutation or a combination? please explain

An elevator moving down passes its neighbor, an elevator moving up. Their speed relative to one another is 8 m/s. What is the velocity of each elevator relative

When is the president of the Senate allowed to vote on legislative matters? to end debate on the floor to bring bills to the floor for debate to register the po

Next four multiples of a unit fraction one half

The average length of a female white-beaked dolphin is about 111 inches. What is this length in feet and inches? A) 9 feet 2 inches B) 9 feet 3 inches C) 10 fee