12sin40°-16sin^3 40°=
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Answer:
=2underoot3
Step-by-step explanation:
The value of 12sin40-16sin raise to 3. 40
=4(3 sin40-4 son raise to 3)
=4sin (3 into 40)
since, 3sinA-4sin raise to 3 A = sin 3 A
=4 into sin 120
=4sin (90+30)
=4cos30
=4 into underoot 3 ➗ 2
=2underoot 3
Therefore,
the value of 12sin40-16sin raise to 3 40 = 2underoot 3...
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