Toán Lớp 9: Cho sin$\alpha$ =0,6. Tính tan$\alpha$
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Toán Lớp 9: Cho sin$\alpha$ =0,6. Tính tan$\alpha$
Comments ( 2 )
Sin anpha = 0,6
Sin^2 + cos^2 = 1
=> 0,6^2 + cos^2 =1
=> cos anpha = 0,8
Tan anpha= sin anpha/cos anpha = 0,6/0,8 = 3/4 = 0,75