Question

find cos (3660) without using calculator​

Answer 1

Answer:

hope it will be right answer

Step-by-step explanation:

This is a question on Trigonometry.

We need to know the relationship between the Trigonometric ratios relevant to this question.

In this question the relevant ratios is sec and cos.

We need to break down sec x.

We break it down as follows:

Sec x = 1/cos x

In this case x = 3660

We do the substitution as follows:

Sec 3660° = 1/Cos 3660°

We get Cos 3660° first as follows :

Cos 3660° = 0.5

From the formula the sec is given by :

1/0.5 = 2

The answer is thus : 2

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Answer 2

Answer:

Hi buddy, your answer is

COS (3660)= -0.999007431.

Thank you.