Chapter 7 Review

Section 7.1Solving Trig Identities

100

sin(-x) = 

What is -sin(x)

200

1 + tan²(x) =

What is sec²(x)

300

cot(x)sin(x) = 

What is cos(x)

400

csc(x)cos(x)tan(x) = 

What is 1

500

sin(x)[cot(x) + cos(x)tan(x)] =

What is cos(x) + sin²(x)

Section 7.2Sum & Difference Identities

100

cos(x - π/2) = 

What is sin(x)

200

sin(135 - 120) = 

What is 0.2588

sin(135)cos(120) - cos(135)sin(120)

300

cos(2x + x) = 

What is cos(2x)cos(x) - sin(2x)sin(x)

400

sin(0 - pi) = 

What is 0

sin(0)cos(pi) - cos(0)sin(pi)

500

tan(x - 3pi/2) = 

What is - cos(x)/sin(x)

-cot(x)

Section 7.3 & 7.4Multiple Angle Identities & Products

100

2sin(x)cos(x) = 

What is sin(2x)

200

1 - 2sin²(x) = 

What is cos(2x)

300

2cos(4x)cos(2x) = 

What is [cos(2x) + cos(6x)]

400

DAILY DOUBLE

cos(8x)sin(3x) = 

What is 1/2 [ sin(11x) - sin(5x) ]

500

sin(9x) - sin(3x) = 

What is 2sin(3x)cos(6x)

Law of Sines

100

<A if a = 3, <B = 45, c = 5 and <C = 37

What is 98

200

b if <A = 36, a = 8, and <B = 48

What is 10.115

300

<C if <B = 26.3, b = 7, and c = 6

What is 22.3

400

a, c, and <C if <B = 70, <A = 33, and b = 7

What is 4.1, 7.3, 77

a = 4.1

c = 7.3

<C = 77

500

<B, <C, and c if <A = 49, a = 32, and b = 28

What is 41.3, 89.7, 42.4

<B = 41.3

<C = 89.7

c = 42.4

Law of Cosines

100

<C if a = 14, <A = 144.8, <B = 20, and c = 6.5

What is 15.2

200

Area of the triangle if <A = 101, a = 10cm, and b = 22cm

What is 107.98 cm²​​​​

300

<A if a = 5, b = 7, and c = 9

What is 95.7

400

Area of triangle if a = 4, b = 5, c = 8

What is 17.41

500

<A, <B, <C if a = 27, b = 19, c = 24

What is 76.8, 43.2, 60

<A = 76.8

<B = 43.2

<C = 60