If the sin 90° is 1, then the cos °=
90° ; 1 over 2
0° ; square root 2 over 2
90° ; square root 3 over 2
0° ; 1
i will fan

Choice D

cos(0) = 1

Explanation:

The rule to use is

sin(x) = cos(90-x)

In this case, x = 90, so

sin(90) = cos(90-90)

sin(90) = cos(0)

1 = cos(0)   replace "sin(90)" with 1

cos(0) = 1

option D

Step-by-step explanation:

The given expression is Sin 90 = 1

As we know by trigonometric identities

Sinx = cos (90 - x)

Then by putting x = 90°

Sin 90° = Cos ( 90 - 90 )

            = cos 0°

            = 1

Therefore, option D is the answer.

cbnygjdyj

step-by-step explanation:

step-by-step explanation:

bob the banana