RD Sharma - Mathematics

Book: RD Sharma - Mathematics

Chapter: 7. Values of Trigonometric Functions at Sum of Difference of Angles

Subject: Maths - Class 11th

Q. No. 12 of MCQ

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12

Mark the correct alternative in the following:

The value of is


cos2 A –sin2 B

=cos(A+B)cos(A-B)



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