Answer:
b. cos²3x - sin²3x = cos6x
if its wrong sorry
hope this helps you☺️☺️
Answer:
A. 85°
Step-by-step explanation:
By intersecting chords theorem:



A_n= a₁+(n-1)d
a₁ first term
n terms
d distance between each value
a_n= 12+(405-1)(5)=2032
<span>Binomial is the sum of two monomials.
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