Question

Daw a pair of tangents to a circle of radius 4cm which are inclined to each other at an angle of

75°.​

Answer 1

Answer:

ANSWER

For the given A.P.,

First term(a)=3

Last term(t

n

)=253

Common Difference(d)=8−3=5

∵t

n

=a+(n−1)d

⇒253=3+(n−1)×5

⇒253−3=(n−1)×5

⇒250÷5=n−1

⇒50+1=n

∴n=51

In 51 terms, 20

th

term from the last term will be 51−20+1=32

th

∴t

32

=a+(32−1)d=3+31×5=3+155=158