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how do we solve a trigonometric equation wherin we have to square the equation at any step?eg.sinx+cosx=1 here why is the general solution : x=2npi or x=(4n+1)pi/2 instead of npi/2?

how do we solve a trigonometric equation wherin we have to square the equation at any step?eg.sinx+cosx=1
here why is the general solution :
x=2npi or x=(4n+1)pi/2  instead of npi/2?

Grade:11

1 Answers

Sourabh Singh IIT Patna
askIITians Faculty 2104 Points
7 years ago
Hii
If you have this as the equation sinx+cosx=1 convert it into a complete single trigonometric function

Multiply 1/sqrt(2) on both sides and convert into a single trigonometric function .You will get the answer.

Best of Luck

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