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Posted: **Mon Jul 11, 2022 10:34 am**

: Express The Given Product As A Sum Containing Only Sines Or Cosines Sin 90 Cos 20 Sin 90 Cos 20 Simplify You 1 (50.71 KiB) Viewed 41 times

Express the given product as a sum containing only sines or cosines. sin (90) cos (20) sin (90) cos (20) = (Simplify your answer, including any radicals. Use integers or fractions for any numbers in the expression.)