(A) because a right angle is 90 degrees and has a equal eqivalent to get to 100
        
                    
             
        
        
        
Answer:
Csc(60)
sin(330)
-4cot(-45)
Step-by-step explanation:
The cosen típic is not mant for use With this type of problem.
 
        
             
        
        
        
The expression for a in terms of c is  . The correct option is the third option
. The correct option is the third option 
<h3>Pythagorean theorem </h3>
From the question, we are to determine the expression for a in terms of c
In the given right triangle, we can write that 
 (<em>Pythagorean theorem</em>)
 (<em>Pythagorean theorem</em>) 
Thus, 



Hence, the expression for a in terms of c is  . The correct option is the third option
. The correct option is the third option 
Learn more on Pythagorean theorem here: brainly.com/question/23994492
#SPJ1
 
        
             
        
        
        
Answer:
x = 75
y = 105
Step-by-step explanation:
Remark
You can find y in two different ways. 
One
You can recall that y is the sum of the 2 interior angles not connected to it. Those angles are called the remote interior angles. Or
Two
You can add the three angles to 180 and solve for x. Then since x and y are supplementary, you can find y.
Solution
One
y = 60 + 45
y = 105                       Answer
Two
x + 60 + 45 = 180      All triangles have 180 degrees. Solve for x.
x + 105 = 180             Subtract 105 from both sides
x = 180 - 105              Combine
x = 75                         Find an equation that relates x and y
x + y = 180                 x and y are supplementary they add to 180
75 + y = 180               Subtract 75 from both sides.
y = 180 - 75                Combine
y = 105