Question

求值sin50°(1+根号3tan10°)求详细过程和文字说明

Answer 1

sin50°(1+根号3tan10°)
=sin50°(cos10°+根号3sin10°)/cos10°
=2sin50°sin40°/cos10°
=sin100°/cos10°

追答

=sin100°/cos10°
=1

=sin100°/cos10°
=cos10°/cos10°=1

sin50°(1+根号3tan10°)
=sin50°(cos10°+根号3sin10°)/cos10°
=2sin50°(1/2cos10°+根号3/2sin10°)/cos10°
=2sin50°sin40°/cos10°
=sin100°/cos10°
=cos10°/cos10°=1

Answer 2

追答

哪里看不懂跟我说