Is this math statement correct of incorrect?

Mathematics
Tutor: None Selected Time limit: 1 Day

"Since sin2Θ + cos2Θ = 1, I should be able to say sin Θ + cos Θ = 1 if I take the square root of both sides?"

1. Is this statement correct or incorrect?

2. If correct, show work to prove. If incorrect, explain the mistake made in the statement.

May 30th, 2015

incorrect because we take square root whole square like (sinQ+cosQ)^2...........................not single square......

May 30th, 2015

What do you mean by "whole square" rather than "single square"?

May 30th, 2015

whole square mean (sinQ+cosQ)^2. and single square mean (sinQ)^2+(cosQ)^2 LIKE THIS

May 30th, 2015

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May 30th, 2015
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May 30th, 2015
Dec 4th, 2016
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