Answer:
x=30o+n90on∈Z
Step-by-step explanation:
cos2x=sin(90o−2x)=sin(2x−30o)
Which mean 90o−2x=2x−30o+n360o
or 90o−2x+2x−30o=(2n+1)180o
The later cannot be true.
so x=30o+n90on∈Z
1.46 is what google is saying just convert that to a fraction
22 x 85 = (20+2)*85= 20*85+ 2*85 = 1700 + 170 = 1870
4/16 in simplest form is 1/4 because 4 goes into 4 1 time and 4 goes into 16 4 times
