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Discussion Response Post to: trignometric equations

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Marshall Eriksen (1586)

Blazing goIITian

total posts: 1312
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First The Fourth Sum

sinx/cosx + 1/cosx = 2cosx
sinx+1/cosx = 2cosx
sinx + 1 = 2 cos^2 x
sinx + 1 = 2(1- sin^2 x)
sinx + 1 = 2 - 2 sin^2 x
2 sin^2 x + sin x - 1 =0
2 sin^2 x + 2sinx - sinx - 1 = 0
2sinx (sinx +1) - 1 (sinx + 1) =0
[2sinx - 1] [sinx +1] =0

Hence It Has 2 Solutions
Please Rate Me If My Solution Was Appropriate

Sometimes One Dream Is Enough To Light Up The Entire October Sky.... First Year Mechanical Engineering Veermata Jijabai Technological Institute

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