Answer:
∠A=30°
Step-by-step explanation:
let's call the angle at the bottom B and the one next to the 130 C
∠A=3x-6
∠C=180-130= 50°
vertical angles are equal∠B =8x+4
∠A+∠C+∠B=180°
find x:
3x-6+50+8x+4= 180°
11x+48=180°
11x= 132
x=12
find ∠A
∠A=3x-6= 3(12)-6 =30°
Answer:
ΔDEC/ΔRST is 13/3 it is c
Step-by-step explanation:
ΔRST/ΔDEC = 3/13 so the inverse is 13/3
Answer:

Step-by-step explanation:
We have to find the quotient of the following division,
.
Now,
=
{Since all the terms in the expression are in product form, so we can treat them separately}
{Since we know the property of exponent as
}
=
=
(Answer)
{Since we know,
}
Tan(x)= 33/105
x = arctan(33/105)
x = 17.44718842 degrees.