Step 1: Use the sum-to-product identity for sine.
The identity is sinA+sinB=2sin(2A+B)cos(2A−B).
Step 2: Substitute A=50∘ and B=30∘ into the identity.
sin50∘+sin30∘=2sin(250∘+30∘)cos(250∘−30∘)
Step 3: Simplify the angles.
sin50∘+sin30∘=2sin(280∘)cos(220∘)
sin50∘+sin30∘=2sin40∘cos10∘
The expression as a product is:
2sin40∘cos10∘
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