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• which of the following explains why cosine 60 degrees = sine 30 degrees using the unit circle? the side opposite a 30° angle is the same as the side adjacent to a 60° angle in a right triangle. on a unit circle, the y (sin) distance of a 30° angle is the same as the x (cos) distance of a 60° angle. the side opposite a 30° angle is the same as the side adjacent to a 60° angle in a right triangle. on a unit circle, the x (sin) distance of a 30° angle is the same as the y (cos) distance of a 60° angle. the ratios describe different sides of the same right triangle. on a unit circle, the y (sin) distance of a 30° angle is the same as the x (cos) distance of a 60° angle. the ratios describe different sides of the same right triangle. on a unit circle, the x (sin) distance of a 30° angle is the same as the y (cos) distance of a 60° angle.
  
• solve for x in the equation x squared minus 10 x + 25 = 35.x = 5 plus-or-minus 2 startroot 5 endrootx = 5 plus-or-minus startroot 35 endrootx = 10 plus-or-minus 2 startroot 5 endrootx = 10 plus-or-minus startroot 35 endroot
  
• roberto lives inland in north america. he measured the temperature and precipitation every day for one winter month and calculated the average temperature and precipitation amount for each week. he recorded his results in a chart.
  
• what ideas are associated with the words compelled and withheld? doubt and confusion injustice and oppression courage and bravery praise and recognition
  
• what is the following quotient? startfraction 9 + startroot 2 endroot over 4 minus startroot 7 endroot endfraction startfraction 9 startroot 7 endroot + startroot 14 endroot over negative 3 endfraction startfraction 36 minus 9 startroot 7 endroot + 4 startroot 2 endroot minus startroot 14 endroot endfraction startfraction 36 + 9 startroot 7 endroot + 4 startroot 2 endroot + startroot 14 endroot over 9 endfraction startfraction 79 over 9 endfraction
  
• a student designed an experiment to test the effect on the magnitude of the magnetic field that is generated around the wire loop. the student increased the current that passes through the wire and tests the magnitude of the magnetic force that is generated. the experimental setup is shown here. which statements accurately describe this experimental design? select all that apply.
  
• when is an operation required to have more than one type of sanitizer test kit
  
• why does a hot water bottle feel warm? molecules in the hot water bottle are moving faster than molecules in the skin. molecules in the skin are moving faster than molecules in the hot water bottle.
  
• where is this person going to take pictures? in pucón in villarrica in chiloe and temuco in osorno
  
• a wave hits an object as shown. a vertical line with medium 1 to the left and medium 2 to the right. an arrow from the left reaches the line. an arrow starts from the same point on the line and goes right at a different angle. which kind of wave interaction is shown? absorption diffraction refraction reflection