You can identify points on a graph by looking at them. The x coordinate is the horizontal line. and the vertical line is the y axis
Answer:
x=133
Step-by-step explanation:
the missing angle plus are supplementary. the missing angle is 47 as a triangle must be 180 degrees.
therefore 180=x+47
= 16 * 10^13
which in scientific notation is 1.6 * 10^14
Solution:
As we know reference angle is smallest angle between terminal side and X axis.
As cosine 45 ° is always positive in first and fourth quadrant.
i.e CosФ, Cos (-Ф) or Cos(2π - Ф) have same value.
As, Cos 45°, Cos (-45°) or Cos ( 360° - 45°)= Cos 315°are same.
So, Angles that share the same Cosine value as Cos 45° have same terminal sides will be in Quadrant IV having value Either Cos (-45°) or Cos (315°).
Also, Cos 45° = Sin 45° or Sin 135° i.e terminal side in first Quadrant or second Quadrant.