Let `z=costheta+isintheta`. Then the value of `sum_(m- gt1-15)Img(z^(2m-1))` at `theta=2^@`...
897 views · Published 11 October 2018 · 8:06 · Indexed 26 September 2026
Channel: Doubtnut · 2018 · Education
To ask Unlimited Maths doubts download Doubtnut from - https://goo.gl/9WZjCW Let `z=costheta+isintheta`. Then the value of `sum_(m- gt1-15)Img(z^(2m-1))` at `theta=2^@` is: 1. `1/sin2^@` 2. `1/(3sin2^@)` 3. `1/sin2^@` 4. `1/(4sin2^@)`
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