Eric is buying a DvD that costs 19.83. He has to pay 7% sales tax. How much will the sales tax be ?
2 answers:
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Answer:
Step-by-step explanation:
we are given a inverse trig
we want to figure out the value of
in that case we can consider using unit circle in unit circle the value of arctan (-√3)=120°
therefore,
the value of theta is 120°
likewise by unit circle the value of sine is
Answer:
The total teachers in the school are 50.
Step-by-step explanation:
Given:
In a school math teachers are 30%.
Now, to get the total teachers in school if there are 15 math teachers.
<em>Percentage of math teachers = 30%.</em>
<em>Number of math teachers = 15.</em>
Let the total number of teachers be .
So, according to question:
⇒
⇒
⇒
<em>Dividing both sides by 0.30 we get:</em>
⇒
Therefore, the total teachers in the school are 50.