Answer:
0.4756
Step-by-step explanation:
The sine of any acute angle is equal to the cosine of its complement. The cosine of any acute angle is equal to the sine of its complement.
Meaning that sin 28.4 = cos 61.6
since 28.4+61.6=90 degree
Answer:
cos 61.6 = .4756
Step-by-step explanation:
Imagine a right-angled triangle.
The two other angles other than the right angle sum up to 90°, right?
Then 61.6° + 28.4° = 90°, so put those two angles in each of the vertices
You will realize that the cos of 61.6° is the sin of 28.4°
