Fundamental Identities

What is the reciprocal function of cos(x)?

• sin(x)

• cot(x)

• csc(x)

• sec(x)

sin² Θ + cos² Θ =

• 1

• 0

• -1

• tan² Θ

• sin Θ

• cos Θ

• csc Θ

• none of these

1 + tan² Θ =

• cot² Θ

• sec² Θ

• csc² Θ

• none of these

cot² Θ + 1 =

• sec² Θ

• csc² Θ

• tan² Θ

• none of these

1 + sec² Θ =

• tan² Θ

• csc² Θ

• cot² Θ

• none of these

• 1 + sec² Θ

• cot² Θ + 1

• 1 + tan² Θ

• sec² Θ + 1

csc² Θ + 1 =

• tan² Θ

• sin² Θ

• cot² Θ

• none of these

• tan Θ

• cot Θ

• 1

• none of these

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