In the accompanying diagram, point P(0.6, −0.8) is on unit circle O. What is the value of θ, to the nearest degree?

Question

In the accompanying diagram, point P(0.6, −0.8) is on unit circle O. What is the value of θ, to the nearest degree?

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Neala 4 years 2021-07-19T20:27:24+00:00 2 Answers 181 views 0

Answers ( )

  1. diemkieu
    -2
    2021-07-19T20:28:43+00:00
    Reply

    ANSWER:

    To find the size of the angle when you know the cos, use cos-1(0.324).

    On hand-held calculators use (2nd) (cos) , enter 0.324 to get the answer: 71.1°.

    On this calculator, use (2nd) (acos) and then enter the value.

    “acos” means “arc cos”, which is the inverse cosine.

    Similarly, find sin-1(0.123) and tan-1(0.783), using (2nd) (asin) and (2nd) (atan).

  2. Philomena
    -1
    2021-07-19T20:28:46+00:00
    Reply

    Answer:

    if I answer ..will you mark as BRAINLIEST

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