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Mathematics 9 Online
OpenStudy (anonymous):

Evaluate each expression. Give exact values. tan(pi/4) a. -1 b. 0 c. 1 d. 1/2

OpenStudy (arhin):

c) 1

OpenStudy (anonymous):

Thank you!

OpenStudy (anonymous):

Tan pi/4 is the same as tan45. pi/4 is in the 1st quadrant so that eliminates all negative answers. Suggestion study the unit circle and the common angles that are associated with trigonometry, such as 30,45,60,90, etc.

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