megan3226
16.01.2020 •
Mathematics
Which trigonometric function is equal to cos 4 degrees?
a. sin 44 degrees
b. sin 4 degrees
c. sin 86 degrees
d. sin 96 degrees
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Ответ:
C
Step-by-step explanation:
Using the cofunction identity
sin(90 - x)° = cosx°, thus
cos4° = sin(90 - 4)° = sin86° → C
Ответ:
you'll find lots of clouds over tropical climates and practically no clouds over desert clmates.