Question

3角函数的题目1.tan1°×tan2°×tan3°……tan89°=?2.（sin1°）＾2＋（sin2°)^2+(s

Answer 1

1、tan1°=cot89°

依此类推：结果=1

sinx°=cos(90°-x°)

2、(sin1°)^2+(sin89°)^2=(sin1°)^2+(cos1°)^2=1

依此类推：结果=44.5