Answer:
Kofi, the building and the tree form an isosceles right triangle KTB.
Refer to picture
15.15
The distance KB is the hypotenuse and its length is:
- KB = √8² + 8² = √64 + 64 = √128 = 8√2
Correct choice is C
15.16
The angles at vertices K and B equal to 45° as opposite sides are equal.
TB is a vertical line which makes angle 180°.
Add 45° to get a required bearing:
Correct choice is C
15.17
P, Q and R form a right triangle with PR as hypotenuse.
RQ is the missing leg and its length is:
- RQ = √PR² - PQ² = √10² - 5² = √100-25 = √75 = 8.7 (rounded)
Correct choice is D
