Answer to Question #48162 in Trigonometry for Mr. X

Question #48162
Find all the values of θ between 0 and 2π for which cos θ/2 = √(1+sin⁡θ ) - √(1- sin⁡θ ) is true.
1
Expert's answer
2014-10-28T14:14:11-0400
The answer to the question is available in the PDF file https://www.assignmentexpert.com/https://www.assignmentexpert.com/homework-answers/mathematics-answer-48162.pdf

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Comments

Assignment Expert
28.10.14, 20:20

Dear Mr. X. In any case we need inverse trigonometric functions. To less complicated calculations, you can assume that angle lies in the certain region of unit circle such that cos(angle)=3/5, sin(angle)=4/5 and regard other cases.

Mr. X
27.10.14, 19:29

See, the thing is that we haven't learnt inverse ratios yet, so is there any way to solve it without using inverse trigonometry?

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