Answer:
<em>A) The reference angle should be </em><u><em>,</em></u><em> and the sign of the value should be </em><u><em>negative.</em></u>
Step-by-step explanation:
cos()
Remove full rotations of 2π until the angle is between 0 and 2.
cos()
Apply the reference angle by finding the angle with equivalent trig values in the first quadrant. Make the expression negative because cosine is negative in the third quadrant.
-cos()
The exact value of cos() is .
−
Answer:
Total budget last year was $41000
Step-by-step explanation:
The Smiths spend 5% of the total budget on entertainment.
Amount on entertainment =
This year they planned to spend the amount on entertainment = $2150
So, 2150 = Total budget ×
Total budget this year =
= $43000
Since, Total budget this year = Total budget last year + $2000
$43000 = Total budget last year + $2000
Total budget last year = $43000 - $2000
= $41000
Answer:
$69
Step-by-step explanation:
take and multiple by the discount then add it back on