The answer is x=3
So c is 3
Answer:
125
Step-by-step explanation:
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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:

Step-by-step explanation:

So,


Answer:
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Step-by-step explanation: