Grade 12th passAlgebracosπ/15 cos 2π/15 cos π/5 cos 4π/15 cos 2π/5 cos 7π/15 twisha 8 Years agoGrade 12th pass
Arun8 Years agoDear student I think you have posted a wrong question. Please check and repost it. You can also attach an image. RegardsArun (askIITians forum expert)