Answer:
1 yard
Step-by-step explanation:
 
        
             
        
        
        
The area of the triangle EFG is 7.4 square units.
Explanation:
Given that the measurements of the sides of the triangle are EF = 8, EG = 8 and 
We need to determine the area of the triangle EFG
<u>Area of the triangle:</u>
The area of the triangle EFG can be determined using the formula,

Substituting the values, we get,

Simplifying the values, we have,

Multiplying, we get,

Dividing, we get,

Hence, the area of the triangle EFG is 7.4 square units.
 
        
             
        
        
        
Answer:
a) For this case we can use the fact that 
And for this case since we ar einterested on  and we know that the if we are below the y axis the sine would be negative then:
 and we know that the if we are below the y axis the sine would be negative then:

b) From definition we can use the fact that  and we got this:
 and we got this:

We can use the notabl angle  and we know that :
 and we know that :

Then we know that  correspond to 225 degrees and that correspond to the III quadrant, and we know that the sine and cosine are negative on this quadrant. So then we have this:
 correspond to 225 degrees and that correspond to the III quadrant, and we know that the sine and cosine are negative on this quadrant. So then we have this:

Step-by-step explanation:
For this case we can use the notable angls given on the picture attached.
Part a
For this case we can use the fact that 
And for this case since we ar einterested on  and we know that the if we are below the y axis the sine would be negative then:
 and we know that the if we are below the y axis the sine would be negative then:

Part b
From definition we can use the fact that  and we got this:
 and we got this:

We can use the notabl angle  and we know that :
 and we know that :

Then we know that  correspond to 225 degrees and that correspond to the III quadrant, and we know that the sine and cosine are negative on this quadrant. So then we have this:
 correspond to 225 degrees and that correspond to the III quadrant, and we know that the sine and cosine are negative on this quadrant. So then we have this:

 
        
             
        
        
        
Is there a worksheet that goes with it? So I can understand better