Answer:
B
Step-by-step explanation:
Sin 64=23/a. Let use trig identities to find other points
First, since sin and cos like are complementary angles we can use this formula
[tex] \sin(x) = \cos(y) \: \: \: x + y = 90[/tex]
sin 64=23/a
[tex]64 + x = 90[/tex]
[tex]x = 26[/tex]
So cos 26=sin 64 so B is a answer
