ΔPQR is right angled at Q. If cosP = 3/5, then what is the value of cosR ?
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Which of the following can't be the unit's digit of a perfect square?
How many spherical balls of radius 1 cm can be made by melting a hemisphere of radius 6 cm?
Which of the following is a true statement?
In which of the following quadrilaterals only one pair of opposite angles is supplementary?
Two tangents PA and PB are drawn to a circle of centre O in such a way that angle AOB = 120 deg. Calculate the value of angle APB.
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