Fundamental Identities

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• tan Θ

• cot Θ

• 1

• none of these

Check all that are true.

• sin x = sin (-x)

• -csc x = csc (-x)

• cos (-x) = cos x

• -tan x = tan (-x)

• sec x = sec (-x)

• sin Θ

• csc Θ

• sec Θ

• none of these

• sin Θ

• cos Θ

• csc Θ

• none of these

• sin Θ

• cos Θ

• sec Θ

• none of these

Which of the following is not a pythagorean identity?

• cot²x + 1 = csc²x

• csc²x + 1 = cot²x

• cot²x - csc²x = -1

• csc²x - cot²x = 1

• cos Θ

• csc Θ

• sec Θ

• none of these

What is the name of the rule for sin²x + cos²x = 1?

• Reciprocal

• Quotient

• Pythagorean