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Express as a function of a positive acute angle:? cos 240 sin(-110)

1 Answer

Vinícius Ferraz

May 18, 2018

And their product is # + cos 60^0 * sin 70^0#

Explanation:

#cos 240^0 = cos (360 - 240)^0 = cos 120^0 #

#= - cos(180 - 120)^0 = - cos 60^0#

#sin (-110^0) = - sin 110^0 = - sin (180 - 110)^0#

#= - sin 70^0#

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