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Find the value of the given expression.
Question

Find the value of the given expression.

A.

2

B.

-1

C.

0

D.

1

Correct option is A

Given:

Expression: 2 + cos(49°)cos(41°) − sin(49°)sin(41°)

trigonometric identity:

cos(A)cos(B) − sin(A)sin(B) = cos(A + B)

Solution:

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