∆ABC is right angled at B. If m∠A = 30°., then Sec C =?
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What is the value of Sin 30° + Cos 30°?
∆ABC is similar to ∆PQR. If ratio of perimeters of ∆ABC and ∆PQR is 1:2 and if PQ = 10 cm then what is the length of AB (in cm)?
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