anishbaniya551645 anishbaniya551645

09-05-2021
Mathematics

contestada

Prove that:
(1 + Tan²A) Cos²A = 1

Respuesta :

saumyaadhikari saumyaadhikari

09-05-2021

Step-by-step explanation:

=(1+ sin^2 A/cos^2 A).cos^2 A

=[(cos^2 a+sin^2 a)/cos^2 a].cos^2 A

=[1/cos^2 a] . cos^2 a

=1

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