If (a2-b2) sin θ + 2abcos θ = a2+b2, then tan θ =
If sec θ + tan θ=m (>1), then the value of sin θ is (00 < θ < 900)
If xsin3 θ + ycos3 θ = sin θ cos θ and xsin θ – ycos θ = 0, then the value of x2 + y2 equals
The value of the expression (1+sec220 + cot 680)(1-cosec220 + tan680) is
B1 is a point on the side AC of Δ ABC and B1B is joined. A line is drawn through A parallel to B1B meeting BC at A1 and another line is drawn through C parallel to B1B meeting AB produced at C1. Then
O is the circumcentre of the isosceles ΔABC. Given that AB=AC=17 cm and BC = 6cm. The radius of the circle is