Find the exact value of the expression. cos 50° cos 20° + sin 50° sin 20° Rewrite the expression using a sum or differen

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Find The Exact Value Of The Expression Cos 50 Cos 20 Sin 50 Sin 20 Rewrite The Expression Using A Sum Or Differen 1 (35.35 KiB) Viewed 45 times

Find the exact value of the expression. cos 50° cos 20° + sin 50° sin 20° Rewrite the expression using a sum or difference formula. Choose the correct answer below. A. cos 50° cos 20° + sin 50° sin 20° = sin (50° +20°) = sin 70° B. cos 50° cos 20° + sin 50° sin 20° = cos (50° +20°) = cos 70° C. cos 50° cos 20° + sin 50° sin 20° = cos (50° -20°) = cos 30° O D. cos 50° cos 20°+ sin 50° sin 20° = sin (50° -20°)=sin 30° The exact value of cos 50° cos 20° + sin 50° sin 20° is (Simplify your answer, including any radicals. Use integers or fractions for any numbers in the expression.)