For the following questions answer them individually
If sin 21°= x/y then sec21°- sin 69° is equal to
If sec α + tan α = 2, then value of sin α is (assume that 0 < α < 90°)
If 3 sin θ + 5 cos θ = 5, then the value of 5 sin θ - 3 cos θ will be
If θ is an acute angle and tan θ + cot θ = 2, then the value of $$tan^{5} θ + cot^{5} θ$$ is
ABCD is a parallelogram in which diagonals AC and BD intersect at 0. If E, F, G and H are the mid points of AO, DO, CO and BO respectively, then the ratio of the perimeter of the quadrilateral EFGH to the perimeter of parallelogram ABCD is
The simple value of tan 1°. tan 2°. tan 3° ..................... tan 89° is
The length of a tangent from an external point to a circle is 5√3 unit. If radius of the circle is 5 units, then the distance of the point from the circle is
In ΔABC, $$\angle{C}$$ is an obtuse angle. The bisectors of the exterior angles at A and B meet BC and AC produced at D and E respectively. If AB = AD = BE, then $$\angle{ACB}$$ =
ABC is an equilateral triangle and 0 is its circumcentre, then the ∠AOC is
ABCD is a cyclic quadrilateral. The side AB is extended to E in such a way that BE = BC. If ∠ADC = 70°, ∠BAD = 95°, then ∠DCE is equal to
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