Answer:
9
Step-by-step explanation:
81 to the power of 1/2 is the same as the square root of 81, which gives 9. It's because the square root has an invisible 2 which most of you can't see with your mathematical eye and 81 is raised to the power of 1 inside the square root.
1/9
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We use tree diagram by connecting relevant samples
thats all
look this solution
36.89°
tan x = 15/20=3/4
x = 36.89
