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#### SIMILAR QUESTIONS

Q1
Q2
Q3

If sin (y + z – x), sin (z + x – y) and sin (x + y – z) are in A.P. then tan x, tan y and tan z are in:

Q4

Which of the following is correct?

Q5

The value of 2 sin2 θ + 4 cos (θ + α). sin α. sin θ + cos 2(α + θ) is:

Q6

If sin6 θ + cos6 θ + k cos2 2θ = 1, then k is equal to:

Q7
Q8

Which of the following is rational number

Q9

Q10

In ΔABC, the line joining the circumcentre to the incentre is parallel to BC, then cos B + cos C is equal to