Answer:
The angle between the two sides of the right triangle is aproximately 31.003º.
Step-by-step explanation:
From image attached on question we infer that we need to find the angle between sides of lengths 6 (adjacent leg) and 7 (hypotenuse) in the right triangle. The angle can be found by means of this trigonometric ratio:



The angle between the two sides of the right triangle is aproximately 31.003º.
Answer:
R = 
Step-by-step explanation:
IR = V ( isolate R by dividing both sides by I )
R = 
-4
Because 15x-7x= 8x
8x+5x= 13x
13x= -52
-52 / 13= -4
x = -4
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