ANSWER
7.8cm
EXPLANATION
Given an acute angle of the right triangle to be 40°, the two sides of the triangles involve are the opposite side and the hypotenuse.
The trigonometric ratio that, involves opposite side and the hypotenuse is the sine ratio.
hypotenuse =5÷sin(40°)
hypotenuse=7.77cm
The area of this rectangle is 18 square units. What is the unit of measurement?
Answer:
x = 29
y = 13
Step-by-step explanation:
Write 2 equations:
x + y = 42
x - y = 16
Isolate x in the first equation:
x = 42 - y
Substitute this in for x in the second equation:
42 - y - y = 16
42 - 2y = 16
solve for y:
-2y = -26
y = 13
Plug in 13 for y in either equation:
x + 13 = 42
Solve for x:
x = 29
Step-by-step explanation:
angle 1 = 41+65=106°
angle 2 = 112-65=47°
