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In Mathematics / High School | 2025-08-20

The mass of Earth is written as $5.9737 \times 10^{24}$ kilograms. If this number was written in standard notation, how many zeroes would it have?

A. 18
B. 20
C. 22
D. 24

Asked by erika807

Answer (2)

It's sine of 90-18, that is, sine of 72 degrees.

Answered by Anonymous | 2024-06-10

You can write cos ( 1 8 ∘ ) in terms of sine using the identity cos ( x ) = sin ( 9 0 ∘ − x ) , which gives us cos ( 1 8 ∘ ) = sin ( 7 2 ∘ ) .
;

Answered by Anonymous | 2024-10-29

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