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Posted: **Thu Jul 07, 2022 2:24 pm**

: Use The Cosine Of A Sum And Cosine Of A Difference Identities To Find Cos S T And Cos S T 6 7 7 Sin S And Sin 1 (10.9 KiB) Viewed 45 times

Use the cosine of a sum and cosine of a difference identities to find cos (s+t) and cos (s-t). √6 √7 7 sin s= - and sin t= - 8 s and t in quadrant IV 4 cos (s+ 1) = (Simplify your answer, including any radicals. Use integers or fractions for any numbers in the expression.)