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celina06:
Eric is hanging a rectangle mirror that has a diagonal of 47 inches with an angle of depression of 60°. How many square inches is the mirror? (round to nearest tenth) A) 956.5 in2 B) 1,104.5 in2 C) 1,365.5 in2 D) 1795.5 in2
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Narad:
The sides of the mirror are a=dcos60º and b=dsin60º d=47 Therefore a= 47cos60º b=47sin60 The area of the mirror is A=47cos60* 47 sin60= 956.5in^2 The correct option is A
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