Q2 of 23 Page 1

Solve any four sub-questions:

If where θ is an acute angle, find the value of cos θ by using identities.


We know that sin2θ + cos2θ = 1


∴ cos2θ = 1 - sin2θ



Using given






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Solve any four sub-questions:

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 2

Solve any four sub-questions:

In the given figure, a tangent segment PA touching a circle in A and secant PBC are shown, If AP = 15 cm BP = 10 cm, find the length of PC.