3 years ago

Which equation can be used to prove 1 + tan2(x) = sec2(x)?

Mathematics

1 answer:

notsponge [240]3 years ago

6 0

Answer:

fourth option

Step-by-step explanation:

Using the trigonometric identity

cos²x + sin²x = 1

Divide all terms by cos²x

$\frac{cos^2x}{cos^2x}$ + $\frac{sin^2x}{cos^2x}$ = $\frac{1}{cos^2x}$ which gives

1 + tan²x = sec²x

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