MATH 1022 TEST 4 QUESTIONS WITH VERIFIED
ACCURATE ANSWERS
when to use the law of sines - Answers - SAA, ASA, and SSA
law of sines - Answers - a/sinA=b/sinB=c/sinC
when to use the law of cosines - Answers - SAS, SSS
law of cosines - Answers - c²=a²+b²=2abcosC
Area of a triangle - Answers - ½absinC
Heron's formula - Answers - s=½(a+b+c)
Area=(square root) s(s-a)(s-b)(s-c)
vertical line - Answers - rcosθ=a
horizontal line - Answers - rsinθ=a
circle - Answers - r=acosθ and r=asinθ
rose - Answers - acos(nθ) or asin(nθ)
lemniscate - Answers - r²=a²cos2θ or r²=a²sin2θ
guide to sketching limacons - Answers - |a/b|≡ 1 cardioid
|a/b|< 1 limacon with inner loop
1<|a/b|<2 limacon with a dimple
|a/b| ≥2 limacon with no inner loop and no dimple
converting equations - Answers - x=rcosθ
y=rsinθ
r²=x²+y²
tanθ=y/x
which two given pieces of info are not helpful when trying to solve right triangle -
Answers - measure of two acute angles
which of the following describes the goal of solving right triangles - Answers - the goal of
solving right triangles is to determine the measure of all angles and the length of all
sides
ACCURATE ANSWERS
when to use the law of sines - Answers - SAA, ASA, and SSA
law of sines - Answers - a/sinA=b/sinB=c/sinC
when to use the law of cosines - Answers - SAS, SSS
law of cosines - Answers - c²=a²+b²=2abcosC
Area of a triangle - Answers - ½absinC
Heron's formula - Answers - s=½(a+b+c)
Area=(square root) s(s-a)(s-b)(s-c)
vertical line - Answers - rcosθ=a
horizontal line - Answers - rsinθ=a
circle - Answers - r=acosθ and r=asinθ
rose - Answers - acos(nθ) or asin(nθ)
lemniscate - Answers - r²=a²cos2θ or r²=a²sin2θ
guide to sketching limacons - Answers - |a/b|≡ 1 cardioid
|a/b|< 1 limacon with inner loop
1<|a/b|<2 limacon with a dimple
|a/b| ≥2 limacon with no inner loop and no dimple
converting equations - Answers - x=rcosθ
y=rsinθ
r²=x²+y²
tanθ=y/x
which two given pieces of info are not helpful when trying to solve right triangle -
Answers - measure of two acute angles
which of the following describes the goal of solving right triangles - Answers - the goal of
solving right triangles is to determine the measure of all angles and the length of all
sides
