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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