Question

solve it if you r genius.​

Answer 1

Answer:

n*pi + (-1)^n (pi/6)

Step-by-step explanation:

Use sum of infinite geometric series relation

Sn = 1/(1-r)

we obtain (1-sinx)/(1+sinx) = (1-cos2x)/(1+cos2x)

Use componendo and dividendo to obtain

sinx = cos2x

write

sinx = 1-2sin²x

solve for sinx = t

2t²+t -1 = 0

Solve to get two possible solutions 1/2 and -1.

Solution (-1) makes denominator 0, thus is disregarded ( or you can say that the geometric sum is valid for r < 1 )

so we get, sinx = 1/2

which gives, x = n.pi + (-1)^n pi/6

Answer 2

Answer:Height of the pole is 21.13 m.Step-by-step explanation:Let EC be the tower of height 50 m and AB is the pole of height h.

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