sin(50)=m,cos(10)=?
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sin(50)=m,cos(10)=?sin(50)=m,cos(10)=?sin(50)=m,cos(10)=?∵sin50°=m∴cos50°=√(1-m²)∴cos10°=cos(60
sin(50)=m,cos(10)=?
sin(50)=m,cos(10)=?
sin(50)=m,cos(10)=?
∵sin50°=m
∴cos50°=√(1-m²)
∴cos10°=cos(60°-50°)
=cos60°cos50°+sin60°sin50°
=(1/2)√(1-m²)+(√3/2)m
sin(50)=m,cos(10)=?
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