Answer:
plz mark brainliest..
Step-by-step explanation:
AC is the hypotenuse = 10
AB is side opposite to <C
<C = 30°, <B = 90°
by 30°-60°-90° theorem
side opposite to 30° is equal to half of hypotenuse
therefore,
AB = 1/2 × AC
AB = 1/2 × 10
AB = 5
therefore number 5 is answer
hope it will help you
See attached. The trick is to use similar triangles.
Answer:

Step-by-step explanation:
is in the third quadrant
To find the reference angle subtract π from it, that is
reference angle =
- π = 
Answer:
the square root of 16 is 4
Step-by-step explanation: