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Use the Properties of the Trigonometric Functions to Find the Exact

Question 304

Multiple Choice

Use the properties of the trigonometric functions to find the exact value of the expression. Do not use a calculator.
- tan⁡40∘cot⁡40∘\tan 40 ^ { \circ } \cot 40 ^ { \circ }


A) −1- 1
B) 40
C) 1
D) 0

Correct Answer:

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