Math, asked by surigitejasreegoud, 5 months ago

13. cos(360-A)cos(36°+A)+cos(54°+A)cos(540-A)=
1) 0
2) sin 2A
3) cos 2A
4) 1

Answers

Answered by osk20215

0

. cos(360-A)cos(36°+A)+cos(54°+A)cos(540-A)=

0

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