DR MATH PLUS


 

Trigs Of The Trade

 

Here comes some triggy equations

 
 
 

Remember, if you are using a calculator, the calculator needs to be in degrees

 
 
 
 
 
 
 
 
 
 


First Aid:
 


Question 1

Calculate:        10 x sin 30º

Answer
 
 
 
0.5 0.8 0.9 5.0
5.2 45.4

 
 
 
 
 
 
 
 
 
 


First Aid:
 


Question 2

Calculate:        10 x cos 60º

Answer:
 
 
 
0.5 5.0 5.9 59.1
59.3 600.0

 
 
 
 
 
 
.

First Aid:
 

Question 3

 

Calculate:        10 x tan 75º

Answer:
 
 
 
0.6 24.1 37.3 750.0
call a friend at the beach

 
 
 
 
 
 
 
 
 
 
 
 


First Aid:
 


Question 4

Determine 'y' given:        sin 40º = y / 100

Answer:
 
 
 
 
0.006 0.6 39.4 64.3
4000.0

 
 
 
 
 
 
 


First Aid:
 


Question 5

    Determine 'x' given:        cos 32º = x / 10

Answer:
 
0.8 8.3 8.4 8.5
31.5

 
 
 
 
 
 
 
 
 
 
 
 
 


Summary

This topic introduces primary trig ratios in equations.

Whenever possible, remember to use the same calculator.

They all get the same answers, but not with the same keystrokes



 
 
 
 

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