Solving cos⁡1652

stropa0u

stropa0u

Answered

2022-01-22

Solving cos1652

Answer & Explanation

terorimaox

terorimaox

Expert

2022-01-23Added 16 answers

Note that 22=42 so you have
f=22(2213)4
=1222132
=1221+32
so remains to prove that
1+32=2+3
To do that,multiply by 2 and square both sides to get
12+3+23=2(2+3)
which are obviously equal to 4+23

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