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3 years ago

If the sin 90 = 1 , then the cos 0 =

Mathematics

2 answers:

fenix001 [56]3 years ago

7 0

Rule of trigonometric functions:-

sin a = cos(90 - a)

Here a = 90°.

sin 90 = cos (90 - 90)

1 = cos 0.

cos 0 = 1.

So the cos 0 = 1.

erik [133]3 years ago

3 0

Answer:

Step-by-step explanation:

If sin 90 = 1

then cos 0 will be

as we know that

cosx = sin(90-x)

If we plug x = 0 ,

cos0 = sin 90 = 1

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