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. 22 of MCQ

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Mark the correct alternative in the following:

If tan 69o + tan 66o – tan 69o tan 66o = 2k, then k =

-1+tan 69° tan66°=tan 69°+tan66°

tan 69°+tan66°-tan 69° tan66°=-1


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