The formula for the light bend would be n1*sin i= n2 * sin r
If you use "sin (90-x)= cos x" principle, you can change the sin in the equation into
n1*sin i= n2 * sin r
n1 * cos a= n2 * cos b
n2/n1= cos a/ cos b
Assuming the n constant is the ratio of the glass compared to water then the answer would be: cos a/ cos b
Answer:
y=-(x-2)^2+9
Step-by-step explanation:
Hope this helps
The answers to the question would be number 2, number 3, and number 5
Answer:
6 * 3/4 = 9 2 = 412 = 4.5
Step-by-ste
6 * 3/4 = 6/1 3*4 = 18/4 = 9/2
2 · 2 = 9/2
Multiply both numerators and denominators. Result fraction keep to lowest possible denominator GCD(18, 4) = 2. In the next intermediate step cancelling by a common factor of 2 gives 9
2
.
In words - six multiplied by three quarters = nine halfs.