Answer:
Please, refer to the images below
Step-by-step explanation:
We need to solve for x in the equation
cos (x+ pi) ^2 = sin (x)
cos (x+ pi) = - cos(x)
(-cos (x)) * (-cos (x)) = sin(x)
cos(x) ^2 = sin(x)
We know that
cos(x) ^2 + sin(x) ^2 = 1
cos(x) ^2 = 1 - sin(x) ^2
1 - sin(x) ^2 = sin(x)
sin(x) ^2 + sin (x) -1 = 0
Let A = sin(x)
A^2 + A - 1 = 0
(solutions attached in picture 1)
This means that
x = arcsin(A)
(solutions attached in picture 2)
Answer:
22.6 feet
Step-by-step explanation:
Let x be the length of tree
tan(62) = x/12
x = 12tan(62)
x = 22.56871758
Scale factor is 4
20/5=4
5*4=20
Answer:
C
Step-by-step explanation
This has a factor of 6% or 0.06. But, you are adding and not subtracting so it is 1.06. ( If you multiply by a number less than 1 then it is actually dividing) So C is the only on that is correct.
Answer:
$496, 000
Step-by-step explanation:
2021 is 11 years since 2010, hence t = 11
Substitute t = 11 into the equation
p = (1.95 × 11²) + (12.25 × 11) + 125
= 235.95 + 134.75 + 125
= 495.7 ( thousands of dollars ), thus the best estimate is
p = $ 496, 000
