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\nGiven two triangles in the 2nd quadrant evaluate the sum of the angles\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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5:55
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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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sine, angles, unit circle, cosine, time, triangles, hypotenuse, opposite, trigonometric functions, trigonometric
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Additional Tags

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math, maths, mathematics, math help, how to, tutorial, sum and difference in quadrants, algebra 1 quadrants, quadrant sum and difference, trig, precalculus, evaluate the sum of the angles, quadrants triangles sum difference, sum and difference in quadrant, math videos, sum and difference quadrant, sum of the angles, geometry, sum of angles of triangle, sum of the angles of a triangle, free math videos, brian mclogan, how, pythagorean triple, gonna create, gonna, create, angle, guys, sign, point, triangle, creating, constraint, quadrant 2, call, adjacent, times, figure, evaluate, subtract 9, equals, sqrt 7, factor, class
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Classroom Considerations

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Best For: Explaining a topic
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