belleza49 belleza49

11-07-2022
Mathematics

contestada

prove that: (1 +tantheta)^2 + (1 - tantheta)^2 = Sec^2 theta pls answer and God will bless u

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dasunmethmal dasunmethmal

11-07-2022

Answer:

Step-by-step explanation:

[tex]=(1 +tan\theta)^2 + (1 - tan\theta)^2\\=(1+2tan\theta+tan^2\theta)+(1-2tan\theta+tan^2\theta)\\=2(1+tan^2\theta)\\=2sec^2\theta.\\[/tex]

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