To express 4 cos š„ + 3 sin š„ in the form Rsin(š„ + š), we first need to find the value of R and š.
Using the identity cos(š - š) = cos š cos š + sin š sin š, we can rewrite the expression as:
4 cos š„ + 3 sin š„ = 5 cos š„ cos 36.9Ā° + 5 sin š„ sin 36.9Ā°
We can see that this expression is in the form Rsin(š„ + š) with R = 5 and š = 36.9Ā°.
Therefore, the answer is (A) 5Sin(x+36.9).
40. Express
4 cos š„ + 3 sin š„ in the
form Rsin(š„ + š)
A. 5Sin(x+36.9)
B. 5Sin(x+53.1)
C. 7Sin(x+36.9)
D. 7Sin(x+53.1)
X
Y
1 answer