Question

please solve it.By using trigonometry formulas

Answer 1

★ TRIGONOMETRIC REDUCTION ★

√3COT40° - 4 COS40°

√3COS40°/SIN 40° - 4COS40°

2[ √3/2COS 40°-SIN 80°] /SIN 40°

[2SIN 60° COS 40° - 2SIN80°]/ SIN 40°

SIN 100° + SIN 20° - 2SIN80° / SIN 40°

[SIN 20°-SIN 80°]/SIN 40°

-2COS 50°SIN 30° /SIN 40°

COS 50°=SIN 40°

THE GIVEN EQUATION IS REDUCED TO

-2 [ SIN 30° ]

-1

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