samikshyaneupane9 samikshyaneupane9

27-11-2021
Mathematics

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How is sin 10° = cos 80°??

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jdoe0001 jdoe0001

27-11-2021

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lor067ewp lor067ewp

27-11-2021

Answer:

See below.

Step-by-step explanation:

Location is Q1

Angle is less than 90

cos Ф = sin(90° - Ф)

cos 80° = sin (90° - 80°)

cos 80° = sin 10° set your calculator in degree mode

Check

cos 80° = 0.1736481777

sin 10° = 0.1736481777

Answer Link

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