6 + y × 9 (the x is a times sign btw)
Answer:
x=7/2
Step-by-step explanation:
According to Statement,
√2(x+1)=3
Taking square on both sides,
2(x+1)=9
2x+2=9
2x=9-2
2x=7
x=7/2
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.
Answer:
Ill do this quick...
Its B.
Step-by-step explanation: