Question

Which pair of angles has congruent values for the sin x° and the cos y°? (5 points)
Select one:
a. 35°; 55°
b. 35°; 145
c. 35°; 70°
d. 35°; 35°

Answer 1

@campbell_st

Answer 2

@campbell_st @robtobey @RadEn

Answer 3

trials one by one.
a. 35° ; 55°
check it, is the value of sin 35° = cos 55° ??

Answer 4

yes :)

Answer 5

you can use the identity :
sin (a) = cos(90 -a) or
cos (a) = sin (90 -a)

Answer 6

thnxs:)

Answer 7

sin(35)° = cos(90 - 35) = cos 55°
directly, it is be right :)