D. 12/1312. Use the unit circle to find cos ( 7 )a.S S/-b.o. 1/2d. -1/2

Pawan B asked Feb 20, 2023

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Pawan B asked Feb 20, 2023

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8 votes

Step 1

Write the trigonometric expression

$cos((7\pi)/(6))$

Step 2:

Step 3

$cos((7\pi)/(6))\text{ = -cos\lparen}(\pi)/(6)\text{\rparen= -cos30}\degree\text{ = -}(√(3))/(2)$

Final answer

Oumar answered Feb 25, 2023

by Oumar

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