Answer: 150
We know that cos Ф = sin (90 - Ф)
If Ф = 150, then:
cos 150 = sin (150 - 90)
cos 150 = sin 60
Using the equation they gave us:
cos 150 = sin ( - 10)
cos 150 = sin 60
A bulletin board is 3 ft high. the area is 15 sq ft. what is the perimeter?
1 answer:
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