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ankoles [38]
3 years ago
14

Prove that: (1 + Tan²A) Cos²A = 1​

Mathematics
1 answer:
Artyom0805 [142]3 years ago
6 0

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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