Express as a function of a DIFFERENT angle, 0^(@) <= theta < 360^(@). cos(110^(@)) cos(◻^(@))

Understand Reference Angles: Understand the concept of reference angles. A reference angle is the acute angle formed by the terminal side of an angle and the x-axis. It is always between 0° and 90° and is useful for finding the trigonometric function of an angle in any quadrant.Determine Angle Quadrant: Determine the quadrant where the angle lies. The angle 110° lies in the second quadrant, where the cosine function is negative.Find Reference Angle: Find the reference angle for 110°. To find the reference angle, subtract the angle from 180° because it is in the second quadrant. Reference angle = 180° - 110° = 70°Express Using Reference Angle: Express cos(110°) using its reference angle. In the second quadrant, the cosine of an angle is the negative of the cosine of its reference angle. Therefore, cos(110°) = -cos(70°).

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Express as a function of a DIFFERENT angle,
0^(@) <= theta < 360^(@).

cos(110^(@))

cos(◻^(@))

Express as a function of a DIFFERENT angle, 0^{\circ} \leq \theta<360^{\circ} . $\newline$ $\cos \left(110^{\circ}\right)$ $\newline$ $\cos \left(\square^{\circ}\right)$

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Algebra 2

Sin, cos, and tan of special angles

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Q. Express as a function of a DIFFERENT angle,

0^{\circ} \leq \theta<360^{\circ}

\newline

\cos \left(110^{\circ}\right)

\newline

\cos \left(\square^{\circ}\right)

Understand Reference Angles: Understand the concept of reference angles. A reference angle is the acute angle formed by the terminal side of an angle and the x-axis. It is always between $0^\circ$ and $90^\circ$ and is useful for finding the trigonometric function of an angle in any quadrant.
Determine Angle Quadrant: Determine the quadrant where the angle lies. $\newline$ The angle $110^\circ$ lies in the second quadrant, where the cosine function is negative.
Find Reference Angle: Find the reference angle for $110°$ . To find the reference angle, subtract the angle from $180°$ because it is in the second quadrant. Reference angle = $180° - 110° = 70°$
Express Using Reference Angle: Express $\cos(110°)$ using its reference angle. $\newline$ In the second quadrant, the cosine of an angle is the negative of the cosine of its reference angle. Therefore, $\cos(110°) = -\cos(70°)$ .