Answer:
x = 8°
y = 21°
Step-by-step explanation:
27 + 3y = 90
3y = 63
y = 21°
x + 8x + 18 = 90
9x = 72
x = 8°
Answer:
One unique triangle
Step-by-step explanation:
Answer:
Step-by-step explanation:
-0,666666666666666666666667
Answer:

Step-by-step explanation:
To find the cosine of <R, apply the following trigonometric ratio formula:

Adjacent = 3
Hypotenuse = √15
Plug in the values into the formula

Multiply the numerator and denominator by √15 to rationalize.



