What is the value of [(sin x + sin y) (sin x – sin y)]/[(cosx + cosy) (cosy – cosx)]?
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What is the value of tan 7π/4?
If the roots of the equation a(b – c)x2 + b(c – a)x + c(a – b) = 0 are equal, then which of the following is true?
ΔABC is right angled at B. If m ∠A = 60°, then what is the value of 1/√3 Cosec C?
The value of x for which the expressions 15 7x and 15x + 7 become equal is _____.
Expand and simplify (x + 4)2 + (x - 2)2
Find the value of 491321973
What is the value of a-b when a2+b2-6a-6b+18 = 0 ?
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