6.4.3 sum and difference formulas
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Transcript of 6.4.3 sum and difference formulas
6.4 Sum and Difference Formulas
Establish IdentitiesFind Exact value of Expressions
Establish the identity 2cos sin
2 2cos cos sin sin
0 cos 1 sin
sin sin
Establish the identity sin sin
sin cos cos sin
0 cos 1 sin
sin sin
Establish the identity 2 2sin sin sin sin
sin cos cos sin sin cos cos sin
2 2 2 2sin cos cos sin
2 2 2 2sin 1 sin 1 sin sin
2 2 2 2 2 2sin sin sin sin sin sin
2 2 2 2sin sin sin sin
Find the exact value of the expression 1 13 125 5sin sin tan
1 35sin 1 12
5tan
35
4
12
5
13
sin sin cos cos sin
3 5 4 125 13 5 13 15 4865 65 33
65
Find the exact value of the expression 1 1 545 12cos sin tan
1 45sin
1 512tan
45
3
5
12
13
cos cos cos sin sin
3 512 45 13 5 13 36 2065 65 16
65
Assignmentp. 482 # 39, 42, 45, 50, 51, 53, 62, 65 - 72