Question

In right triangle ABC, ∠A and ∠B are complementary angles and sin A = 89. What is cos B?

Answer 1

there's something wrong with this question.
the sine of an angle must be between -1 and 1 (89 is definitely not a sine!)
Perhaps its A = 89 ? or sin A = 0.89?

Answer 2

idk why it came out like that it a = 8/9

Answer 3

oh ok
8/9 makes sense

Answer 4

yeah idk why it came out as 89 when i pasted it

Answer 5

sin A = opposite side / hypotenuse = 8 /9
cos B = adjacent side / hypotenuse

What is the adjacent side for angle B?

Answer 6

note the hypotenuse is the longest (slanting) side

Answer 7

complementary means <A and <B add up to 90 degrees
that's why i could draw the right angled triangle