building casts a shadow 210 ft. long, 40 degree angle.How tall is the building?

Hi Vera,

I drew a diagram

I see a right triangle with an angle of 40^{o}, the side adjacent to this angle is of length 210 feet and the side opposite to this angle has unknown length h feet. What trig function related the measure of the angle with the lengths of the opposite and adjacent sides?

Penny

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