Answer:
90°
Step-by-step explanation:
cosx = y=1
Therefore cosx =1
For cosx= 1
x= 90°, 450°, 810° ... etc.
Now 0° ≤ x ≤ 360°
The only value that satisfies both relations is 90°
Therefore, x= 90°
2nd answer. it is because it is
(1,3)
the answer is "B" the second one...
(1/2)(2)^x
at
0 = (1/2)(1) = 1/2
2= (1/2)(4) = 2
