Trig. Identities
Sum and Difference formulas
Sum to product formulas
Trigonometry (SINES)
Trigonometry (COSINES)
100
sin(x) 1/cos(x)
What is the identity of sin(x)sec(x)=tan(x) ? ANSWER ONLY NEEDED
100
to verify an identity for a sum involving cosines, as well as identities for a sum and a difference for sines.
What is the purpose of the sum and difference formulas?
100
there are four
How many sum to product formula is there?
100
a/sinA=b/sinB=c/sinC
What is the Law of Sines?
100
There are three
How many law of cosines are there?
200
cot(x)=cot(x)
What is the end result of cos(x)csc(x)=cot(x) ? ANSWER ONLY NEEDED
200
there are four that can be used
how many sum and difference formulas are utilized for solving?
200
2sin(a+B)/2cos(a-B)/2
What is the the sum to product formula of sin(a)+(B)?
200
b=59.4
Use the law of sines to find b ? b/sin71=5.6/sin63 ANSWER ONLY NEEDED
200
1. a^2=b^2+c^2-2bccosA 2.b^2=a^2+c^2-2accosB 3.c^2=a^2+b^2-2abcosC
What are the Law of cosines formulas?
300
-tan(x)cos(x)
What is one identity you can use to solve tan(-x)cos(x) = -sin(x)
300
cos(a+B)=cos(a)cos(B)-sin(a)sin(B) cos(a-B)=cos(a)cos(B)+sin(a)sin(B)
What are the two formulas for cosine?
300
2cos(a+B)/2cos(a-B)/2
What is the sum to product formula of cos(a)+cos(B)?
300
B=96.5
find B ? 50+B+33.5=180 ANSWER ONLY NEEDED
300
a=26.5
Use the law of cosines to find a? a^2=20^2+30^2-2(20)(30)cos60 ANSWER ONLY NEEDED
400
2/1-cos^2(theta)
What is the end result when you verify the identity of 1/1+cos(theta)+1/1-cos(theta)=2+2cot^2(theta) ? ANSWER ONLY NEEDED
400
sin(a+B)=sin(a)cos(B)+cos(a)sin(B) sin(a-B)=sin(a)cos(B)-cos(a)sin(B)
What are the two formulas for sine?
400
2sin(a-B)/2cos(a+B)/2
What is the sum to product formula of sin(a)-sin(B)?
400
a=58.6
Use the law of sines to find a ? a/sin50=76/sin96.5 ANSWER ONLY NEEDED
400
b=869
Use the law of cosines to find b? b^2=650^2+600^2-2(650)(600)cos88 ANSWER ONLY NEEDED
500
yes it does
If you verify tan(x)-sin(-x)/1+cos(x)=tan(x) does it give you tan(x) ?
500
Sin(theta)
Solve (PIE/2-Theta)-cos(PIE/2)cos(theta)+sin(PIE/2)sin(theta)
500
-2sin(a+B)/2sin(a-B)/2
What is the sum to product formula of cos(a)-cos(B)?
500
c=42.2
Use the law of sines to find c ? c/sin33.5=76/96.5
500
Herons formula is to find the area of a triangle in terms of lengths of its side.
What is Herons Formula?
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