求值 (cos10°+根号3sin10°)/cos50°

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求值 (cos10°+根号3sin10°)/cos50°
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求值 (cos10°+根号3sin10°)/cos50°
求值 (cos10°+根号3sin10°)/cos50°

求值 (cos10°+根号3sin10°)/cos50°
(cos10°+√3sin10°)/cos50°
=2(1/2*cos10°+√3/2sin10°)/cos50°
=2(cos60°*cos10°+sin60°*sin10°)/cos50°
=2cos50°/cos50°
=2

(cos10°+√3sin10°)/cos50
=2*(1/2cos10+√3/2sin10)/cos50
=2sin(30+10)/cos50
=2sin40/cos50
=2cos50/cos50
=2