Answer:
62.79cm
Step-by-step explanation:
<u>We are using TRIGONOMETRY</u>. To find the area of a triangle with 2 lengths and a non-right angle, we will use the sine rule.
Area of Triangle = 1/2 * a * b * sin(c)
(Where a & b represent our lengths, and sin(c) represents our angle.)
Area of Triangle = 1/2 * 10 * 13 * sin(105)
Area of the Triangle = 62.79cm
3x-5y=4------eq1
4x+3y=15-------------eq2
multiply 3 to first eq and 5 to second eq.
9x-15y=12
20x+15y=75
subtract both eqs
29x=87 x=3 so put x in eq 1
3(3)-5y=4
5y=5
y=1
Answer:
A & D are correct
Step-by-step explanation:
to solve for 'x':
4x + 16 = 180
4x = 164
x = 41
m∡A = 2(41)+1 = 83°
m∡B = 41°
m∡C = 41+15 = 56°
Answer:
If x=1 then f(x)=-3
Step-by-step explanation:
Answer: The coordinates of triangle A'B'C',
A'≡(3/2, -9/4)
B'≡(-3, 9/4)
C'≡(3/2, 9/4)
Step-by-step explanation:
Since, the rule of transforming the triangle ABC by the scale factor -3/4,
Thus, the coordinates of the transformed triangle A'B'C',
So, the coordinates are A'≡(3/2, -9/4)
B'≡(-3, 9/4)
C'≡(3/2, 9/4)
