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36 votes
Find the value of sin20. sin 30. sin 40. sin 80


QUESTION NUMBER #16

Find the value of sin20. sin 30. sin 40. sin 80 QUESTION NUMBER #16-example-1
User Divyang Hirpara
by
2.4k points

1 Answer

15 votes
15 votes

Answer:

about 0.108253

Explanation:

You want the product sin(20°)·sin(30°)·sin(40°)·sin(80°).

Sine

The values of the sine function are found using a table or calculator. The attachment shows the list of sine values and their product.

The product is about 0.108253.

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Additional comment

We're not sure what to make of the expression sin 20° . sin 30° .... Elsewhere on the page, a proper multiplication symbol (×) is used. A decimal point makes no sense in the context of this expression. We know that a baseline dot is sometimes intended to signify multiplication, so that is the interpretation used above.

If this is intended to be asking for four (4) sine values, they are shown in the attachment.

Find the value of sin20. sin 30. sin 40. sin 80 QUESTION NUMBER #16-example-1
User Jhornnes
by
2.7k points
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