Trigonometry Question
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Grade 11 Trigonometry CCSS: HSG-SRT.D.11
John needs to fell a tree but needs to know how tall it is. The tree makes an angle of 80 degrees with the ground. John walks 30 m in the direction the tree is leaning. From here he sights the top of the tree and finds the angle of inclination to be 30 degrees. What is the height of the tree?
- 10 m
- 21 m
- 16 m
- 15 m