Answer:
wouldn't this be 18.052
Step-by-step explanation:
add 15 and 2 then add 1 (from 0.7 plus 0.3) then add the other decimals
Answer:
45 degrees
Step-by-step explanation:
Saying arccos(-√2/2) is the same as saying cos(x)=-√2/2. This is one the trigonometric values you should have memorized if you are taking a a trig class. In order to get √2/2, x must be equal to 45° or pi/4. But since it is a negative √2/2, the answer would be -45°or -pi/4.
There are technically multiple answers to this, but since you weren't given a range for the answers, I would stick with -45°.
Hope this helps
45°?
Step-by-step explanation:
The second floor of a building is 20 m above the ground.
From this floor, the angle of
elevation of the top of an eucalyptus tree is 15°
and the angle of depression of the foot of the same tree is 10°
10+15+20=45