1.

In the adjoining figure, ∠B = 90°,∠BAC = θ°, BC = CD = 4cm and AD = 10 cm. find(i) sinθand(ii) cosθ

Answer»

In ∆ABD,

Using Pythagoras theorem, we get

= 6 cm

Again,

In ∆ABC,

Using Pythagoras therem, we get

Now,



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