Question

PR and PS are two tangents drawn from an external point P of the circle with center at O, if PR =8 cm and ​

Answer 1

Step-by-step explanation:

Correct option is

B

4 cm

From figure,

CA is perpendicular to AP and CB is perpendicular to BP

Again AC = BC = 4 (radius of the circle)

Also AP = PB = (Tangents from point P)

So, BPAC is a square.

=> AP = PB = BC = CA = 4 cm

So, length of tangents are 4 cm each

therefore option B will be the answer.

Answer 2

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A plam Tree stans on the bank of river, A post is fixid in the earth on the other bank, just opposite in the plam tree. On moving 7√3metres from the post along the bank, it is found that the tree makes an angel of 60°at that point with respect to this bank. Then the width of the river is a) 20 metres b) 21meters c) 22 meters d) 24meaters (MCQ)