Show that sin? 20° +sin? 40° + sin 80 2 (HINT: 40° = 60° -20° and 80° = 60° + 20° - QAmmunity.org

Show that sin? 20° +sin? 40° + sin 80 2 (HINT: 40° = 60° -20° and 80° = 60° + 20°

asked Apr 21, 2022 204k views

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