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\nEvaluating the difference of two angles for the cosine function\n

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\n\nPublisher:\n\nBrian McLogan\n\n\n
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\n👉 Learn how to evaluate the secant of the sum or difference of two angles using the sum/difference formulas. To do this, we first use the Pythagoras theorem to obtain all the sides of the right triangle in the unit circle. Recall that...\n👉 Learn how to evaluate the secant of the sum or difference of two angles using the sum/difference formulas. To do this, we first use the Pythagoras theorem to obtain all the sides of the right triangle in the unit circle. Recall that secant is the reciprocal of cosine, so when we know the trigonometric function values of the two angles to be added or subtracted, we can apply the sum and difference formulas of cosine to evaluate the cosine of the sum and the difference of the two angles and then take their reciprocals.\n
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Resource Details

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Curator Rating
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Educator Rating
Not yet Rated
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Media Length
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4:55
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Grade
12th - Higher Ed
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Subjects
Math
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Media Type
Instructional Videos
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Source:
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\nBrian McLogan\n\n
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Date
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2014
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Language
English
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Audiences
For Teacher Use
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Usage Permissions
Fine Print: Educational Use
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Concepts

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cosine, sine, angles, pythagorean theorem, triangles, hypotenuse, trigonometric
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Additional Tags

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math, maths, mathematics, math help, help me with math, how to, cosine of the difference of two angles, functions of the difference of two angles, cosine of dfference of two angles, differance of angles, evaluating cosine of difference of two angles, cosine of difference of two angles, formula for the cosine of the difference of two angles, adding two angles of cosine, the cosine of the difference of two angles, basic trigonometry, sin, trig, opposite side, adjacent side, side, pythagorean, circle, perpendicular, adjacent, difference, angle, times, alright, justin, goal, video, point, create, triangle, quadrant 2, hard, problem, remember, case, quadrant, important
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Classroom Considerations

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Best For: Explaining a topic
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\n\" data-title=\"Get Full Access\" data-container=\"body\" rel=\"popover\" tabindex=\"0\" aria-label=\"Play video: Evaluating the difference of two angles for the cosine function\" href=\"/subscription/new\">\"Evaluating\n\n
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