Physics lab assignment – trigonometric measurements

Lab Report                                                    Name: ____________________
 
 
 
                                                                                    Section: ___________________
 
 
 
EXPERIMENT:   Trigonometric Measurements
 
 Data Tables:
 
 Procedure 1:
 
 Experimental measurement of the angles and sides of a right triangle:
 

  

Side “a” (cm)

Side “b” (cm)

Side “c” (cm)

Angle “A”

Angle “B”

Measurements

 59 ½ cm

 41.6 cm

 72.5 cm

 55 degrees

 35 degrees

 
 Procedure 2:
 
 Determination of the sides of a right triangle when the hypotenuse and one angle are measured:
 

  

Hypotenuse “c”

Angle “B”

Measurement

 70 cm

 30

 
 Procedure 3:
 
 Determination of the hypotenuse and angles of a right triangle when the sides are measured:
 

  

Side “a”

Side “b”

Measurement (cm)

 45

 35

 
 
 

 
 
 
 

 
 
 
 

 
 
 
 

 
 
 
 

 
 
 
Procedure 4:
 
 
 
Indirect measurements of heights by trigonometry
 
 
 
 
 
 
 
Questions:
 
 A.    Draw a triangle with sides measuring 8, 12, and 14.4 units. With a protractor measure the angles. Then compute the angles trigonometrically.
 
 B.     What would happen in your previous experiments if the wall or building were not perpendicular to the ground?
 
C.     What uncertainty is introduced into the experiment by using a tape measure to measure the sides of the triangle?
 
D.    To what degree of accuracy can you read a protractor?

Physics lab assignment – trigonometric measurements

Lab Report                                                    Name: ____________________
 
 
 
                                                                                    Section: ___________________
 
 
 
EXPERIMENT:   Trigonometric Measurements
 
 Data Tables:
 
 Procedure 1:
 
 Experimental measurement of the angles and sides of a right triangle:
 

  

Side “a” (cm)

Side “b” (cm)

Side “c” (cm)

Angle “A”

Angle “B”

Measurements

 59 ½ cm

 41.6 cm

 72.5 cm

 55 degrees

 35 degrees

 
 Procedure 2:
 
 Determination of the sides of a right triangle when the hypotenuse and one angle are measured:
 

  

Hypotenuse “c”

Angle “B”

Measurement

 70 cm

 30

 
 Procedure 3:
 
 Determination of the hypotenuse and angles of a right triangle when the sides are measured:
 

  

Side “a”

Side “b”

Measurement (cm)

 45

 35

 
 
 

 
 
 
 

 
 
 
 

 
 
 
 

 
 
 
 

 
 
 
Procedure 4:
 
 
 
Indirect measurements of heights by trigonometry
 
 
 
 
 
 
 
Questions:
 
 A.    Draw a triangle with sides measuring 8, 12, and 14.4 units. With a protractor measure the angles. Then compute the angles trigonometrically.
 
 B.     What would happen in your previous experiments if the wall or building were not perpendicular to the ground?
 
C.     What uncertainty is introduced into the experiment by using a tape measure to measure the sides of the triangle?
 
D.    To what degree of accuracy can you read a protractor?

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