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
Answer:
By definition of congruence
Step-by-step explanation:
Triangle ABC is congruent to triangle DBE
the answer is Minor New Purchase Decision. <span>It refers to a decision, in which the purchase of something totally new for the consumer is involved, but the purchase is not important in terms of need and / or money</span>
Answer:
A. 
Step-by-step explanation:
The third order polynomial is factored herein:
Which represents answer A.
