Find the exact values for csc(3/4pi) and csc(-2/3pi)
Favorites|Homepage
Subscriptions | sitemap
HOME > > Find the exact values for csc(3/4pi) and csc(-2/3pi)

Find the exact values for csc(3/4pi) and csc(-2/3pi)

[From: ] [author: ] [Date: 12-12-20] [Hit: ]
.or special right triangles, with the correct quadrant ![sin (π/4) = (√2) / 2,those should help some !]-(1) csc(pi - pi/4) = csc(pi/4) = sqrt(2) .......
Please show me how you find these. Thank you in advance(:

-
csc = 1/sin
as sin(3/4pi) = 1/√2
csc(3/4pi) = √2

as sin(-2/3pi)=-sin(2/3pi) = -√3/2
csc(-2/3pi) = -2/√3 = - (2√3)/3

-
(3π/4) radians = 135º

(- 2π/3) radians = - 120 º

csc (θ) = 1/sin θ

Now you need to get the unit circle out...or special right triangles, with the correct quadrant !



[sin (π/4) = (√2) / 2, sin (π/3) = (√3)/2
those should help some !]

-
(1) csc(pi - pi/4) = csc(pi/4) = sqrt(2) . (2) -csc(pi - pi/3) = -csc(pi/3) = -2/(sqrt3)
1
keywords: and,pi,values,for,exact,Find,csc,the,Find the exact values for csc(3/4pi) and csc(-2/3pi)
New
Hot
© 2008-2010 http://www.science-mathematics.com . Program by zplan cms. Theme by wukong .