0.5735764264 (nearest 10 decimal places).
The cosine of 20 degrees is 0.93969262
cos(55) = 0.022126756261956
You cannot. The cosine of 30 degrees is an irrational number.
Cosine(42 radians) = -0.399985 Cosine(42 degrees) = 0.743146
0.5735764264 (nearest 10 decimal places).
The cosine of 70 degrees is 0.34202014332567.
The cosine of 20 degrees is 0.93969262
It is 0.9849
cos(35)sin(55)+sin(35)cos(55) If we rewrite this switching the first and second terms we get: sin(35)cos(55)+cos(35)sin(55) which is a more common form of the sin sum and difference formulas. Thus this is equal to sin(90) and sin(90)=1
In degrees they are the same value.
The Sine of 216 degrees = -0.587785252 The Cosine of 216 degrees = -0.909016994
225 degrees
The cosine of 90 degrees is zero.
The cosine of 8 degrees is 0.99026806874157031508377486734485
cos(55) = 0.022126756261956
Cosine is 0.995