Math, asked by sarayu99, 9 months ago

Cos(60°+theta)+cos(60°-theta)

Answers

Answered by Anonymous

26

Step-by-step explanation:

=cos(60'+x) + cos(60'-x)

= (cos60' * cosx - sin60' * sinx) + (cos60'*cosx + sin60'*sinx)

= 2 * cos60'*cosx

= 2 * 1/2 * cosx

= cosx

Answered by Anonymous

9

Answer:

Please find a pic as attachment

Step-by-step explanation:

Hope it helps

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