Questions

• Trigonometric Ratios and Using Trigonometry understand the sine, cosine and tangent ratios for angles between 0° to 90°

  \(\sin^{2}(2^\circ)+\sin^{2}(4^\circ)+\sin^{2}(6^\circ)+ ... +\sin^{2}(84^\circ)+\sin^{2}(86^\circ)+\sin^{2}(88^\circ)+\sin^{2}(90^\circ) = \)

  2024

• Trigonometric Ratios and Using Trigonometry explore the exact value of trigonometric ratios on special angles 30°, 45°, 60°

  \(\cos^{2}(1^\circ)+\cos^{2}(3^\circ)+\cos^{2}(5^\circ)+ ... +\cos^{2}(85^\circ)+\cos^{2}(87^\circ)+\cos^{2}(89^\circ) = \)

  2024

• More About Trigonometry Solve the trigonometric equations a sin θ = b, a cos θ = b, a tan θ = b (0° to 360°) and other equations

  對於 \(0^{\circ} \leq \theta < 360^{\circ}\)，方程式 \(2 \cos^2 \theta + \cos \theta - 1 = 0\) 有幾個根？

  2024

• More About Trigonometry Solve the trigonometric equations a sin θ = b, a cos θ = b, a tan θ = b (0° to 360°) and other equations

  對於 \(0^{\circ} \leq \theta \leq 360^{\circ}\)，方程式 \(4 \cos^2 \theta - 3 \sin \theta - 1 = 0\) 有幾個根？

  2024

• More About Trigonometry Solve the trigonometric equations a sin θ = b, a cos θ = b, a tan θ = b (0° to 360°) and other equations

  對於\(0^{\circ} \leq \theta \leq 360^{\circ}\)，方程式\(\cos \theta(2\tan \theta - 1) = 0\)有多少個根？

  2024

• More About Trigonometry Solve the trigonometric equations a sin θ = b, a cos θ = b, a tan θ = b (0° to 360°) and other equations

  解方程式 \(3 \cos \theta - \sqrt{5} \sin \theta = 0\)，其中 \(0^{\circ} \leq \theta \leq 360^{\circ}\)，準確至小數點後一位。

  2024

• More About Trigonometry Solve the trigonometric equations a sin θ = b, a cos θ = b, a tan θ = b (0° to 360°) and other equations

  解\(2 \sin(90^\circ - \theta) - \sqrt{3} \cos(180^\circ + \theta) = 0\)，其中\(0^{\circ} \leq \theta \leq 360^{\circ}\)。

  2024

• Trigonometric Ratios and Using Trigonometry apply trigonometric ratios to find measures of 2-D figures

  In the figure, $Q P=$

  

  2024

• More About Trigonometry Understand the sine and cosine formulae

  在圖中所示的三角形中，邊長的比例為 \(a:b:c = 4:5:6\)。計算 \(\cos A : \cos B\) 。

  

  2024

• More About Trigonometry Understand the sine and cosine formulae

  在所提供的圖形中，\( ABC \) 是一條直線，且 \( AB = BC = CD \)。\( \cos(\theta) \) 的值是多少？

  

  2024