Jawabanmu

2014-06-08T14:55:49+07:00
Cos 45' = 160/sisi miring
1/2√2 = 160/sisimiring
Sisi miring = 160/(√2/2) = 160/√2 = 80√2
Tinggi menara Sin 45' = tinggi/80√2
tinggi menara = 1/2 √2 x 80 √2 = 40(2) = 80 cm