hey guys please answer my question with proper steps and I'll mark u brainliest
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Let θ = x
cos x + sin x = √2 cos x
squaring on both side, we get......
cos2x + sin2x + 2cosxsinx = 2cos2x
2sinxcosx = 2cos2x - cos2x - sin2x
2sinxcosx = cos2x - sin2x
2sinxcosx = (cosx+sinx) (cosx - sinx)
2sinxcosx = (root2 cosx) (cosx - sinx)
2sinxcosx/root2 cosx = cosx - sinx
√2 sinx = cosx - sinx
hope it hlps u
yosha20:
yeah
i will tell u
it is given the question na
it is just the substitution if cos x + sin x
from the question
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here your answer dear.....
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