• Congratulations to the Class of 2024 on your results!
    Let us know how you went here
    Got a question about your uni preferences? Ask us here

Trig functions area of sector (1 Viewer)

SophJI

Member
Joined
Mar 16, 2009
Messages
83
Location
Garbage
Gender
Female
HSC
2009
hey can anyone help out with this question..so stuck

The question is

Find the area of the sector, correct to 2 dp, givern

e) Radius is 2.1m and angle subtended is 82 degrees 35minutes



i've attached my working out and i got it wrong
Where am i making mistakes? i don't know what to put in the calculator
can ne1 explain?

and the answer is 3.18
 

simplyyme

Member
Joined
Oct 23, 2008
Messages
143
Gender
Female
HSC
2009
Radius is 2.1m and angle subtended is 82 degrees 35minutes

1. 82°35' x pi/180 = 1.44 (2 dp)

2. 1/2 x (2.1)² x (1.44) = 3.1752 or 3.18 ( 2 dp)
 

Users Who Are Viewing This Thread (Users: 0, Guests: 1)

Top