Math, asked by suzisujay6368, 1 year ago

sin1°+sin2°+sin3°+.........sin358°+sin359° Find exact value

Answers

Answered by ΑͶδH
79
♦ Trigonometric Reduction ♦

--> sin ( 360 - 
θ ) = - sin θ

--> sin 1° + sin 2° + sin 3° + ... + sin 358° + sin 359°

[ sin 1° + sin 359° ]+[ sin 2° + sin 358° ]+...+[sin 179°+sin 181°]+sin180°

=> [ sin 
θ + sin ( 360 - θ ) ] = [ sin θ - sinθ ] = 0

Hence, we are left with sin 180°, which = 0

--> s
in 1° + sin 2° + sin 3° + ... + sin 358° + sin 359° = 0 √√
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