PRE CALCULUS CHAPTER 4 EXAM PREP
COMPLETE QUESTIONS AND VERIFIED
ANSWERS GRADED A+
◉In one full revolutions there are how many radians? . Answer: 6.28
radians (or 2π radians)
◉To convert from degrees to radians multiply by... . Answer: π / 180º
◉To convert from radians to degrees . Answer: 180º / π
◉Arc Length= ? in degrees . Answer: (θº/360º) ∙ 2πr, (where theta is in
degrees and r is radius)
◉Arc Length = ? in radians . Answer: Arclength= rθ, (where theta is in
radians and r is radius)
◉Unit Circle Picture . Answer: (Add pic)
◉The reference angle is the acute angle formed from the terminal side to
the x axis. Always positive! . Answer: (Add Pic of a terminal angle,
hand draw it)
COMPLETE QUESTIONS AND VERIFIED
ANSWERS GRADED A+
◉In one full revolutions there are how many radians? . Answer: 6.28
radians (or 2π radians)
◉To convert from degrees to radians multiply by... . Answer: π / 180º
◉To convert from radians to degrees . Answer: 180º / π
◉Arc Length= ? in degrees . Answer: (θº/360º) ∙ 2πr, (where theta is in
degrees and r is radius)
◉Arc Length = ? in radians . Answer: Arclength= rθ, (where theta is in
radians and r is radius)
◉Unit Circle Picture . Answer: (Add pic)
◉The reference angle is the acute angle formed from the terminal side to
the x axis. Always positive! . Answer: (Add Pic of a terminal angle,
hand draw it)