For A = 30°, find the value of 3sin A - 4sinº A.
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Answered by
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Step-by-step explanation:
3 sin 30° - 4 sin 30°
= 3×(1/2) - 4×(1/2)
= (3/2) - (4/2)
= (3/2) - 2
= (3-4)/2
= -1/2
Answered by
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A=30°
3sinA-4sinA
3×sin30°-4×sin30°
sin30°=1/2
=3×1/2-4×1/2
=3/2-4/2
=3-4/2
=-1/2
3sin30°-4sin30°=-(sin30°)=-1/2
3sinA-4sinA
3×sin30°-4×sin30°
sin30°=1/2
=3×1/2-4×1/2
=3/2-4/2
=3-4/2
=-1/2
3sin30°-4sin30°=-(sin30°)=-1/2
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