the value of sin50-sin70+sin10
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Answered by
7
sin50-sin70+sin10
=2cos60 sin(-10) + sin10
=-2×1/2×sin10 + sin10
=-sin10+ sin10
=0
=2cos60 sin(-10) + sin10
=-2×1/2×sin10 + sin10
=-sin10+ sin10
=0
Answered by
6
Answer:
Your answer is 0
Step-by-step explanation
=sin50 - sin70 +sin10
=sin(60-10) - sin(60+10) + sin 10
=sin60cos10 - cos60sin10 - sin60cos10 - cos60sin10 +sin10
=root3/2cos10 - 1/2sin 10 -root3/2 cos 10 -1/2 sin10 +sin10
=sin10 -sin10
=0
Hence proved
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