Simplify the expressions. (use only positive exponents in your answers.) (a) (9x4)(-9x-3) = incorrect: your answer is incorrect.
1 answer:
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Answer:
1. d ≈ 19
2. a ≈ 39.00°
3. x ≈ 37°
Step-by-step explanation:
1) Using sine to find <em>d</em>, recall that sine = opposite side/hypotenuse. So:
Cross multiply:
d = 30 (sin(39))
d ≈ 19
2) To find the measure of the angle, we can use sine because we have the opposite side and hypotenuse measures. So:
Using the inverse of sine:
Input into calculator:
a ≈ 39.00°
3) To find the measure of the angle, we can use tangent because we have the opposite side and adjacent side measures. So:
Using inverse of tangent:
Input into calculator:
x ≈ 37°