Answer:
Ren was 27.5 meters away from her family.
Step-by-step explanation:
Ren Qian was at a height of 10 meters to the ground. Let the distance from her vertical point on the ground to her family (i.e the ground distance) be represented by x.
But the angle of depression is measured with respect to the horizontal plane, so;
the vertical angle = 
- 20°
= 
Applying the appropriate trigonometric function, we have;
Tan θ = 
Tan = 
⇒ x = 10 x Tan
= 10 x 2.7475
= 27.475
x = 27.5 meters
Ren was 27.5 meters away from her family.
H(x)=-5x^2+10x+15h(x)=−5x 2 +10x+15h, left parenthesis, x, right parenthesis, equals, minus, 5, x, squared, plus, 10, x, plus, 1
kkurt [141]
Answer:
15 units
Step-by-step explanation:
Given the equation which models the path of a stone as:
At the time when the stone was thrown
x=0
Therefore:
The height of the stone at the time it is thrown is 15 units.
Answer:
C = 79, B = 26 degrees
Step-by-step explanation:
tan C = 5.1323
To find C you use your calculator . Press tan-1 ( or it might be arctan) then the value 5.1323 Then ENTER.
C = 79 degrees to nearest degree.
cos B = 0.8954
B = 26 degrees
Answer:
61300000000000000
Step-by-step explanation:
Answer:5x
Step-by-step explanation:
