Question

Prove that: tan²0 - 1/cos²0 +1 = 0
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Answer 1

Answer:

Step-by-step explanation:

Given: Tan² θ – (1/cos² θ) + 1 = 0

From trigonometric identities, we know that sec² θ = 1/cos² θ, sec² θ = 1 + tan² θ  

Tan² θ – (1/cos² θ) + 1 = 0

tan² θ – sec² θ + 1 = 0

(1 + tan² θ) – sec² θ = 0

sec² θ - sec² θ = 0

0 = 0

Hence, Proved

Answer 2

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