RD Sharma - Mathematics

Book: RD Sharma - Mathematics

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

Subject: - Class 11th

Q. No. 4 of Exercise 7.1

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4

If tanA = 3/4, cosB = 9/41, where π<A < 3π/2 And 0 <B < π/2, find tan(A +B).

Given tanA = 3/4 And cosB = 9/41 where π <A < 3π/2 And 0 <B < π/2


A is in third quadrant And B is in first quadrant.


Tan function And sine function are positive.


We know that






We know that




We know that





Chapter Exercises

More Exercise Questions

6

If SinA = 1/2, cosB = , where π/2<A < π And 0 <B < π/2, find the following:

(i) tan(A +B)(ii) tan(A -B)