Question

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

A) cos A
B) sin C
C) tan C
D) cos C

Answer 1

Answer is C

Explanation:

for edmentum students I got it correct on the test

Answer 2

m (<C) = 45
m (<B) = 90
In a triangle the sum of angles = 180;
m (<A) = 180 - 90 - 45 = 45

sin A = sin 45 =
`( √(2) )/(2)`
sin 45= cos 45 =
`( √(2) )/(2)`

cos A = cos 45 = sin A
sin C = sin 45 = sin A
cos C = cos 45 = sin A

But tan C = tan 45 = 1
It means that the answer to you question is C) tan C