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secondary 3 | A Maths
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Pls help to solve Qi , thank
Date Posted: 2 years ago
Views: 403
（i）
cos(x/2) = ²⁄₉
→ x/2 = 77.1604116°
→ x/2 = 360° - 77.1604116°
= 282.8395884° （✗）
x₁ = 154.32°
（ii）
2x+35° = atan(1.5) = 56.31°
or
2x+35° = 180° + 56.31°
⇨
x₁ = 10.65°
x₂ = 100.655°
cos(x/2) = ²⁄₉
→ x/2 = 77.1604116°
→ x/2 = 360° - 77.1604116°
= 282.8395884° （✗）
x₁ = 154.32°
（ii）
2x+35° = atan(1.5) = 56.31°
or
2x+35° = 180° + 56.31°
⇨
x₁ = 10.65°
x₂ = 100.655°
See 1 Answer
May i know how to get 2/9 , pls
⅔÷3=？
Thank ,
for the clarification.Appreciate the effort put in to guide me
for the clarification.Appreciate the effort put in to guide me
Thank alot
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