Hello,
cos 2t=2cos²t-1
2cos 2t -cos t-1=
==>2(2cos² t -1)-cos t-1=0
==>4cos² t -cos t -3=0
Δ=(1+4*4*3=49=7²
cos t= (1+7)/8 or cos t=(1-7)/8
cos t =1 or cos t=-3/4
t=0° or t=138.590377...°
Answer:
x=11
Step-by-step explanation:
hope this helps
Answer:
1
Step-by-step explanation:
Starting from the y-intercept of [0, 1], you do <em>rise\</em><em>run</em><em> </em>by either moving one block <em>south</em><em> </em>over one block <em>west</em><em> </em>or one block <em>north</em><em> </em>over one block <em>east</em><em>.</em><em> </em>Either way, you will still get a <em>rate</em><em> </em><em>of change</em><em> </em>[<em>slope</em>] of 1.
I am joyous to assist you anytime.
Of all it's sides and angles