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Write cos (19°) in terms of sine​
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3 votes
Write cos (19°) in terms of sine​

User Eecue
by
8.4k points

1 Answer

2 votes

Answer:

sin(71°)

Explanation:

Sine lags behind cosine by 90°

In other word, cos(∅) = sin(90° - ∅)

cos(19°) = sin(90° - 19°)

= sin(71°)

User Lev Kazakov
by
8.7k points
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