but.. which is it, the positive or negative version of "b"? well.... we know tangent is < 0, that's another way of saying, tangent is negative
now.. .tangent is opposite over adjacent... for tangent to be negative, the sign of those two must differ
so.. where does that happens? well, it happens on the 2nd and 4th quadrants, so..... which quadrant then?
well, we know the hypotenuse is always positive, is just the radius anyway, and in this case is 6
but the adjacent is positive 5, that means the adjacent is positive, thus the opposite must be negative, and that happens on the 4th quadrant
so that means
so... now, you have all three sides, the hypotenuse, the adjacent, and the opposite, so, just fill those in, in the ratios for cosine, sine and tangent
34^2 + 20^2 = 1156 + 400 = 1556
47^2 = 2209
because the squares of the 2 smaller sides is less than the square of the longer side the triangle is Obtuse
The average speed of Dolly is 33.33kmph.
Average Speed:
The average speed is defined as the total distance travelled by the object in a particular interval of time. It can be calculated by dividing the total distance travelled by the total time taken.
So, Average Speed = total distance / total time
Here,
Let the total distance is 100 km.
Therefore, consider she will travel 60 km at speed of 60 kmph , 30 km at speed of 30 kmph and 10 km at speed of 10 kmph.
she will required times of 1 hour, 1hour and 1hour
So,
Average speed = 100 / (1 + 1 + 1)
=> 100 / 3 = 33.33
To know more about Average speed here
brainly.com/question/12322912
#SPJ4
