7. To convert rupees and paise into paise, we need to convert rupees
into paise and —-
the paise.​

Question

7. To convert rupees and paise into paise, we need to convert rupees
into paise and —-
the paise.​

in progress 0
Anna 3 months 2021-07-17T12:54:03+00:00 2 Answers 0 views 0

Answers ( )

    0
    2021-07-17T12:55:26+00:00

    Answer:

    hope it helps ☺️

    Step-by-step explanation:

    Substitutex=cos\alp,\alp∈[0:;π]

    \displaystyle Then\; |x+\sqrt{1-x^2}|=\sqrt{2}(2x^2-1)\Leftright |cos\alp +sin\alp |=\sqrt{2}(2cos^2\alp -1)Then∣x+

    1−x

    2

    ∣=

    2

    (2x

    2

    −1)\Leftright∣cos\alp+sin\alp∣=

    2

    (2cos

    2

    \alp−1)

    \displaystyle |\N {\sqrt{2}}cos(\alp-\frac{\pi}{4})|=\N {\sqrt{2}}cos(2\alp )\Right \alp\in[0\: ;\: \frac{\pi}{4}]\cup [\frac{3\pi}{4}\: ;\: \pi]∣N

    2

    cos(\alp−

    4

    π

    )∣=N

    2

    cos(2\alp)\Right\alp∈[0;

    4

    π

    ]∪[

    4

    ;π]

    1) \displaystyle \alp \in [0\: ;\: \frac{\pi}{4}]\alp∈[0;

    4

    π

    ]

    \displaystyle cos(\alp -\frac{\pi}{4})=cos(2\alp )\dotscos(\alp−

    4

    π

    )=cos(2\alp)…

    2. \displaystyle \alp\in [\frac{3\pi}{4}\: ;\: \pi]\alp∈[

    4

    ;π]

    \displaystyle -cos(\alp -\frac{\pi}{4})=cos(2\alp )\dots−cos(\alp−

    4

    π

    )=cos(2\alp)…

    1

    hope it helps ☺️

    0
    2021-07-17T12:55:32+00:00

    Answer:

    100 is answer of question

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