ChallengeMedium ShareChallenge · Medium problemIf sinθ+cosθ=12\sin\theta+\cos\theta=\tfrac12sinθ+cosθ=21, what is sinθcosθ\sin\theta\cos\thetasinθcosθ?A−12-\tfrac12−21B−716-\tfrac{7}{16}−167C−38-\tfrac38−83D−14-\tfrac14−41E18\tfrac1881Check Show answer Walk through it step by step Practice more like this