Let sin⁻¹(
) = x
Therefore, sin(x) =
x should lie in first quadrant because √3 and 2 both are positive.
Therefore, sin(x) = 60° = π/3
Option 1 is the Answer.
For explanation, then please check the attached image.
<em>By </em><em>Benjemin</em>
Real numbers, both rational and irrational numbers are real numbers
Answer:
The answer is (-3,7/2)
Step-by-step explanation:
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<h2>Answer:</h2>
Number of biology textbooks sold: 257 textbooks
Number of psychology textbooks sold: 181 textbooks
<h2>Explanations:</h2>
Let the total number of biology textbook sold be "a"
Let the total number of psychology textbook sold be "b"
If a textbook store sold a combined total of 438 biology and psychology textbooks in a week, then:
a + b = 438 ................... 1
If the number of psychology textbooks sold was 76 less than the number of biology textbooks sold, then;
b = a - 76 ...................... 2
Substitute equation 2 into 1
a + (a-76) = 438
a + a - 76 = 438
2a = 438 + 76
2a = 514
a = 514/2
a = 257 biology textbooks
From equation 2;
b = a - 76
b = 257 - 76
b = 181 psychology textbooks
Number of biology textbooks sold: 257 textbooks
Number of psychology textbooks sold: 181 textbooks
