TS EAMCET · Maths · Complex Number
One of the values of is
- A
- B
- C
- D
Answer & Solution
Correct Answer
(B)
Step-by-step Solution
Detailed explanation
Given, -32i25 =3225-i25 =4-i25 =40+isin3π225 =4cos3π2+isin3π225 Now using cosθ+isinθn=cosnθ+isinnθ we get, =4cos3π2×25+isin3π2×25 =4cos3π5+isin3π5 =4cis3π5
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