Discuss Which ratio would we use to find the missing angle How do you know 10 cm 85 cm Which ratio would we use to find the missing angle How do you know hyp opp adj Hypotenuse known Opposite known ID: 772400
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Discuss: Which ratio would we use to find the missing angle? How do you know? 10 cm 8.5 cm
Which ratio would we use to find the missing angle? How do you know? hyp opp adj Hypotenuse known Opposite known Angle required
In your book… Title: Using Trigonometry to calculate a missing angle in a right-angled triangle.
Worked Example Your Turn hyp opp adj
Calculate the missing angles to three significant figures.
Mark your work 29.1 36.0 55.2 66.8 72.257.170.5 38.9
Further Problems A marine runs 500 metres east and then 600 metres north. If he had run directly from his starting point to his final position what bearing should he have run on? The diagram shows a simple bridge which is supported by four steel cables. Find the angles and
Further Problems 3. Calculate angle GDC 4. Calculate angle EDA 5. Calculate angle EFH
Mark your work 39.8 33.7, 19.4 10.5 23.6 27.0
Challenge Which space diagonal is at a larger angle to the base?