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
Is there an equation with the question? This doesn't mean anything^
Correct answers in reasoning and statements together.
Please give brainliest thank you so much!!
Hope this helps!!
Answer:
Just took test, got it right. In the following:
Step-by-step explanation:
Scenarios:
A- Survey
B- Observation
C- Experiment
D- Survey
The next step would be 10n=5x-7+9-x
sincerely- brock<span />