Math, asked by xXMsSuchana05Xx, 1 day ago

cos× cos 30+ cos× cos 45+ cos× cos 60 + cos× cos 90=

Face reveal in -1!!!!!!!!

Answers

Answered by immuwani846

0

Step-by-step explanation:

cos40

∘

+cos50

∘

+cos70

∘

+cos80

∘

=cos20

∘

+cos10

∘

.

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