francogenesis46 francogenesis46

14-02-2020
Mathematics

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write cos (19°) in terms of sine

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GrandNecro GrandNecro

14-02-2020

Answer:

sin(71°)

Step-by-step explanation:

Sine lags behind cosine by 90°

In other word, cos(∅) = sin(90° - ∅)

cos(19°) = sin(90° - 19°)

= sin(71°)

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