The reciprocal of -13/7 should be -7/13
Answer: 40
Step-by-step explanation:
60% is answer...20% is taken each year so After 2 yrs it's 40% less 100-40 is 60
Answer:
Step-by-step explanation:
y = Cos(2x)
Inverses for trig functions are found the same way as any other inverse. The trick is to interchange x and y.
x = cos(2y) Take the inverse cos of both sides.
cos-1(x) = 2y Divide by 2
1/2 cos-1(x) = y
