William bought 6 CDs for $8.97 each. about how much did he spend?
1 answer:
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Answer:
51.7661748226 degrees; 38.2338251774 degrees
Step-by-step explanation:
First, draw a diagram to illustrate this situation. Looking at angle A, Eric's height, 1.65 m, corresponds to OPPOSITE, and Eric's shadow, 1.30 m, corresponds to ADJACENT. Using SOH CAH TOA, the equation is:
tan(A) = 1.65/1.30
A = arctan(1.65/1.30)
A = 51.7661748226 deg
Looking at angle B, 1.65 m is ADJACENT and 1.30 m is OPPOSITE. Therefore, the equation is:
tan(B) = 1.30/1.65
B = arctan(1.30/1.65)
B = 38.2338251774 deg
For this case we have the following functions:
The first thing we must do for this case is to subtract both functions.
We have then:
Substituting we have:
Rewriting we have:
Evaluating the obtained function for x = 3 we have:
Answer:
The value of the function evaluated at x = 3 is: