Question

Solve (sin+cos+1) (sin+cos-1) ​

Answer 1

Answer:

Step-by-step explanation:

Sinsquare + cos square -1

Answer 2

HeYa❤️...

Formula used:

$\sin {}^{2} + \cos {}^{2} = 1$

$a {}^{2} + b {}^{2} + 2ab = (a + b) {}^{2}$

Solution:

$= \sin {}^{2} + \sin\cos - \sin + \sin \cos + \cos {}^{2} - \cos + \sin + \cos - 1 \\ \\ = \sin {}^{2} + \cos{}^{2} + 2 \sin\cos - 1 \\ \\ = ( \sin + \cos) {}^{2} - 1 \\ \\ = (1) {}^{2} - 1 \\ \\ = 1 - 1 \\ \\ = 0$

I hOpe It HeLpS Ya!

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