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Lina20 [59]
3 years ago
10

In right triangle ABC A and B are complementary angles and sin A = 8/9. What is cos B?

Mathematics
2 answers:
alexandr402 [8]3 years ago
7 0
CosB = cos (π/2-A)
= sinA
=8/9
xeze [42]3 years ago
5 0
If the sin A = 8/9 then
Angle A = arc sine (8/9) =
62.734 Degrees

Angle B is the complement of Angle A and equals
90 -62.734 Degrees =
<span> <span> <span> 27.266 Degrees

cosine (</span></span></span> <span> <span> <span> 27.266 </span> </span> </span> ) = 0.88889
 

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