MCQOPTIONS
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				| 1. | 
                                    When height of a tree is equal to the length of its shadow, what is the angle of elevation of the sun? | 
                            
| A. | 30 deg | 
| B. | 60 deg | 
| C. | 90 deg | 
| D. | 45 deg | 
| Answer» E. | |