Since pi is equivalent to 3.14 and means 180°, therefore 1.75 which
is about half of pi should be at almost 90°. The cos of a 90° angle which is located on
the y axis should be zero, therefore cos 1.75 must be near zero. However in
this case it is near one, clearly his calculator is in degree mode that is why
he got an erroneous answer.
What Sam
can do to get the correct answer would be to convert his calculator into radian
mode or convert the given 1.75 rad into degrees:
θ = 1.75
rad (180° / π rad)
θ =
100.2676
<span>cos 100.2676
= -0.1782 which is now correct since it
is nearer to zero</span>
Answer:
I could say the nearest tenth is 50 or 60
Step-by-step explanation:
I hope that helps ight
Answer:
C = 108 feet
Step-by-step explanation:
if in 1 hour she descends at a speed of 36
in 3 hours she will descend. x
3 hours x 36 feet / 1 hour = 108 feet
Answer: 5
Step-by-step explanation:
Answer:
90°
Step-by-step explanation:
Ok, I get it now.
Draw two perpendicular lines. Starting at any of the right angles, name them 1, 3, 2, 4 going around in order.
Now you have vertical angles 1 and 2, vertical angles 3 and 4, and angle 3 is adjacent to angles 1 and 2. this is exactly what the description states.
Since angles 3 and 4 are right angles, then all angles are right angles.
m<1 = m<2 = m<3 = m<4 = 90
m<4 + m<1 - m<2 = 90 + 90 - 90 = 90
Answer: 90°
