lwaites18
11.06.2020 •
Mathematics
Please help me with this question, I need it to pass the class!!
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Ответ:
cos(20°)
Step-by-step explanation:
The "cofunction" is the function having the same value for the complement of the angle that this function has for the angle.
The cofunction of sine is cosine. The complement of 70° is 90° -70° = 20°.
sin(70°) = cos(20°)
Ответ: