Explanation:
1. sin 21 = x/12
x = 12*.35=4.2
2. cos 56 = 10/x
x = 10/cos 56 = 11.72
3. tan 32 = x/7
x = 7*tan32 = 4.6
4. tan 35 = 5/x
x = 5/tan 35 =10.55
5. tan 61 = 3/x
x = 3/tan 61 = .8
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