Write out the sum formula for sin
<span>sin(x + y) = sinxcos + sinycosx </span>
<span>Then expand sin(a + b) + sin(a - b) </span>
<span>sinacosb + sinbcosa + sinacosb - sinbcosa </span>
<span>The 2nd and 4th terms cancel and you get </span>
<span>2sinacosb</span>
Answer: the answer is infinite solutions
Step-by-step explanation:Systems of Equations Level 1:
Question 1
Two linear equations are given below.
Exactly how many solutions does this system of equations have?
Select one:
The supplementary angle is 0.628.
Hope that helps
Answer:
48 minutes.
Step-by-step explanation:
9 divided by 3 equals 3, 16 multiplied by 3 equals 48.
Answer:
In mathematics, a polynomial is an expression consisting of variables and coefficients, that involves only the operations of addition, subtraction, multiplication, and non-negative integer exponentiation of variables. An example of a polynomial of a single indeterminate x is x² − 4x + 7
Step-by-step explanation:
