Answer:
8
Step-by-step explanation:
X^2 + X - 12 = 0
(X + 4)(X - 3) = 0
X = -4 and X = 3.
Answer:
sin 5x cos x - cos 5x sin x = sin(4x)
Step-by-step explanation:
Given that the trigonometric expression,
sin 5x cos x - cos 5x sin x
Here we use the "sum and difference formulas"
Sum and Difference Formulas
sin(A+B)=sin A cos B + cos A sin B
sin(A-B)=sin A cos B - cos A sin B
cos(A+B)=cos A cos B - sin A sin B
cos(A-B)=cos A cos B + sin A sin B
So,
sin 5x cos x - cos 5x sin x = sin (5x - x)
sin 5x cos x - cos 5x sin x = sin(4x)
That's the final answer.
You would do 11ft x 6.5 then that would equal 71.5. Then do 6 x 5 which is 30 then add them up so it equals 101.5
