Proving 1 + tan 2 ⁡ 40 ∘ = sec 2 ⁡ 40 ∘

Kassandra Ross

Kassandra Ross

Answered

2022-06-28

Proving 1 + tan 2 40 = sec 2 40

Answer & Explanation

jarakapak7

jarakapak7

Expert

2022-06-29Added 14 answers

1 + tan 2 x = 1 + sin 2 x cos 2 x = cos 2 x + sin 2 x cos 2 x = 1 cos 2 x =: sec 2 x .
Yours is just the particular case x=40.

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