D. 1/4 + 1/5 = 5/20 + 4/20 = 9/20 = 45/100 = 0.45
The base is 2, the exponent is 5. You're welcome. ;)
Answer:
The sin A expressed in ratio form is 
Step-by-step explanation:
From the given right angled triangle diagram, sin A is calculated as follows;

Therefore, the sin A expressed in ratio form is 