Question

SUOLUSU
14.
(C) 2cosAcosB
sin 15° + cos 105º =
(A) 1
(C) O
cos 121° + sin 149° =
(A) O
(C) -1​

Answer 1

HEYA MATE HERE IS YOUR ANSWER

Step-by-step explanation:

the first one is (c) 0

and the second one is (c)again -1

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