Answer:
∠L = 25°
Step-by-step explanation:
Two sides are equal. so , it is an isosceles triangle.
Angles opposite to equal sides are equal.
∠L = 25
54.16 is more precise because it has more digits
Make sure D is by its self so
90=6(d-84)
Divide both sides by 6 to get rid of 6 from the right side so
90/6= (d-84)
15 =(d-84)
Now get rid of the 84 by adding it
15+84= d
99=d therefore d is equal to 99
Answer:
and below
Step-by-step explanation:
33a+21c = 228
a+b = 8
solving the equation b= 3 a =5
Answer:
7. 49
8. 10.4
Step-by-step explanation:
7) our hypotenuse is 8, and the side opposite the base of ladder and ground angle is 6, therefore we can use Sin
sin = opposite/hypotenuse
sin(x) = 6/8 = 3/4
sin-1(3/4) = 49
8) using the theorem that alternate exterior angles are congruent
the angle opposite side x is 30
tan = opposite/adjacent
tan(30) = x/18
x = 18tan(30) = 6√(3) = 10.4
you can also use 30-60-90 special right triangles.
the side opposite 30 is x
side opposite 60 is x√(3)
and side opposite 90 is 2x