F.4 Maths

2010-02-28 8:28 pm

Solve the following equation for 0°≤x≤360°.
(Give your answers correct to 1 decimal place if necessary.)

3tan(x+30°)=4

回答 (2)

2010-02-28 8:46 pm

✔ 最佳答案

3tan(x + 30°) = 4

tan(x + 30°) = 4/3

x + 30° = 53.1° or x + 30° = 180° + 53.1°

x = 23.1° or x = 203.1°

參考: 老爺子

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2010-02-28 8:49 pm

3tan(x+30°)=4
tan(x+30°)=4/3
(x+30°)=53.1° or 233.1°

(x+30°)=53.1°
x=23.1°

(x+30°)= 233.1°
x=203.1°

參考: me

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