Answer:
B. No

Step-by-step explanation:
-A right angle triangle has two complimentary acute angles and one right angle.
-
is usually one of the acute angles and is equivalent to 90º minus it's complimentary acute angle.
-Complimentary angles add up to 90º.
#For complimentary angles:

The two acute angles cannot have the same Cosine value.
Hence, she's not correct.
You find a common denominator (the bottom one) and then add the numerator (the top) but you don't add the denominator, you just make it the same
Answer:
Simplify the expression: 
Use the exponent power:

Apply the given rules;

Simplify:

then;

Therefore, the simplified expression of
is, 
Answer:
like 140
Step-by-step explanation:
yeah
Answer:
20
Step-by-step explanation:
8/2 equals 4 and 5 x 4 = 20.