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Trig Identities
Solving Trig Equations
Using Identity Formulas
Law of Sines
Law of Cosines
100
tan(x)cot(x)
What is 1?
100
cos(x)=1/2
What is pi/3, 5pi/3?
100
sin(75)=
What is (sqrt(6) + sqrt(2))/4?
100
How many solutions? X=95 degrees and opposite side is 5 inches and the adjacent side is 7 inches.
What is no solutions?
100
Solve the triangle: b = 9m, c = 12m , A = 28 degrees.
What is a=5.9m, B = 45.7 degrees, C = 106.3 degrees?
200
(1-sin(x))(1+sin(x))=
What is cos^2(x)?
200
3tan^2(x)-1=0
What is pi/6, 5pi/6
200
sin(30)cos(50)+cos(30)sin(50)
What is sin(80)?
200
How many solutions? A=20.5 degrees, a=5, b=25.
What is 2 solutions?
200
Find the area of a triangle that has: 3 sides (37ft, 39ft, 12ft)
What is 222 ft squared?
300
tan(x)cot(x)/cos(x)
What is sec(x)?
300
2sin^2(x)-sin(x)-1=0
What is 7pi/6, 11pi/6, and pi/2?
300
Given sin (x)=-5/13 and Q3, what is the double angle for cosine?
What is 119/169?
300
Find the area of a triangle with: 2 sides (6 inches, 7 inches) and an included angle of 74 degrees. Round to the nearest tenth.
What is 20.2 inches squared?
300
Solve the triangle that has 3 sides: (55in, 25in, 72in)
What is 39.35 degrees, 16.75 degrees, and 123.9 degrees?
400
(1-sin^2(x))/cos(x)
What is cos(x)?
400
2sin^2(x)-sin(x)=0
What is 0,pi, 5pi/6, pi/6?
400
Use the double angle formula to rewrite 4cos^2(x)-2.
What is 2cos(2x)?
400
Solve the triangle: B=10 degrees, C=135 degrees, c=45 yds.
What is A = 35 degrees, a = 36.5 yds, and b = 11.1 yds ?
400
Solve the triangle: A = 48 degrees, b=3m, c=14m
What is B= 10.53 degrees, C= 121.47 degrees, a=12.2m?
500
sec^2(x)(1-sin^2(x)=
What is 1?
500
2sin^2(x)+3sin(x)+1=0
What is 7pi/6, 3pi/2, and 11pi/6?
500
Find cos(a-b), if angles a and b are in Quadrant 1, and cos(a)=3/5 and sin(b)=5/13.
What is 56/65?
500
Solve the triangle: A = 24.3 degrees, C = 54.6 degrees, c = 21.6 feet.
What is B = 101.1 degrees, a 1.35 feet, b = 3.23 feet?
500
Find the area of the triangle: sides (420ft, 330ft, 104ft)
What is 9677 ft squared?