Answer:
137 - 48 = 89, so she climbed 89
Step-by-step explanation:
(1,4) you go right 1 time, and than go up 4.
Answer:
Acute Triangle
Step-by-step explanation:
All angles are less than 90 degrees.
Answer:

Step-by-step explanation:
Given


Required:
Calculate the angle between u and v
The angle
is calculated as thus:

For a vector


becomes




For a vector


So;






So:






Take arccos of both sides





<em></em>
<em> (approximated)</em>
the inside of quadrilateral is always 360°.So add 75°,90° and 75° and then subyaract from360°.
x+75°+75°+90°=360
×+240°=360°
x=360°-240°
x=120°