Thgreatone Thgreatone

08-11-2016
Mathematics

contestada

Find the exact value of sin (-5pi/3) without using a calculator

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ShiNoTensi ShiNoTensi

08-11-2016

i got .866 but i rounded up for .87
hope i helped add me
Dosvedanya :)

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aleyonndreyanai aleyonndreyanai

08-11-2016

Without a calculator use the unit circle. Cos is x and sin is y. 5pi/3 is( 1/2, -sqrt3/2), Since cos of 5pi/3 is 1/2 (x) sin your y coordinate is -sqrt 3/2. Since you have a negative you want positive I think it's just sqrt 3/2.

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