Trigonometry – Wind Turbine Blade Angle
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- P = P(\text{solar}) \cdot P(\text{reduce} \mid \text{solar}) + P(\text{no solar}) \cdot P(\text{reduce} \mid \text{no solar})
- = 0.30 \cdot 0.85 + 0.70 \cdot 0.15 = 0.255 + 0.105 = 0.36
- Answer:** \(\boxed{0.36}\)
- A wind turbine blade makes a 35° angle with the horizontal. If the blade length is 20 m, find the vertical height from base to tip.
- Use sine:
- \sin(35^\circ) = \frac{\text{opposite}}{20} \Rightarrow \text{height} = 20 \cdot \sin(35^\circ) \approx 20 \cdot 0.5736 = 11.472
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