Double and half angle identities.notebook

Double and half angle identities.notebook
February 02, 2012
1
Double and half angle identities.notebook
February 02, 2012
2
Double and half angle identities.notebook
February 02, 2012
3
Double and half angle identities.notebook
February 02, 2012
Verify:
sin(θ + θ) = 2sinθcosθ
cos(θ + θ) = cos2θ - sin2θ
4
Double and half angle identities.notebook
February 02, 2012
Section 7.4: Double and Half Angle Identities
5
Double and half angle identities.notebook
February 02, 2012
If sinθ = 3/4 and θ has it terminal side in the first quadrant, find the exact value of each function.
a) sin2θ
b)cos2θ
c) what quadrant is 2θ in?
6
Double and half angle identities.notebook
February 02, 2012
Verify:
csc2x = 1/2(secx cscx)
7