Question

Which trigonometric ratio will not have the same value as sin A?

Answer 1

Sin(A) = BC/CA

The inverse is often Cosine(A).
Cos(A) = AB/CA

Because we know that the hypotenuse is equal to the length of the two smaller sides.

BC/CA = AB/CA

BCCA = CAAB
C = A

Which is true, becuase 90 + 45 + a (and we know c = a, so a + 45)

90 + 45 + 45 = 180.

Answer 2

cos A

sin C

tan C

cos C

Answer 3

so it's A. right?

Answer 4

I don't know, is it cos(a)?

Answer 5

Read the proof I did

Answer 6

Yeah

Answer 7

okay, yeah it is. Thank you darling :)

Answer 8

do you care to help me on about four more?