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    Trigonometric functions

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    ASSIGNMENT 5
    7.1
    2. if cos x = -.65, then cos (-x) = -.65
    Find the remaining five trig functions of theta
    22. cos theta = 1/5, theta in quadrant I
    30. tan x = D sin x/cos x T or F
    34. - tan x cos x =
    Write each expression in terms of sine and cosine and simplify
    52. cot square theta (1+ tan square theta)

    7.2
    Perform the operation and simplify
    2. sec x/ csc x + csc x / sec x
    Factor each trigonometric expression
    18. 4 tan square B + tan B - 3
    Use fundamental identities to simplify
    26. cot t tan t
    Verify the trigonometric equation is an identity
    34. tan a / sec a = sin a
    44. cos theta/sin theta cot theta = 1
    60. sin theta / 1-cos theta - sin theta cos theta / 1 + cos theta = csc theta (1+cos square theta)
    Graph
    76. 1+cot square s = sec square s / sec square s - 1

    7.3
    Use identities to find the value
    6. cos ( -15 degrees)
    Write the function value in terms of the cofunction of a complementary angle
    16. sin 2pi/5
    Use identities to write each expression as a function of x or theta
    50. tan ( pi/4 + x)
    Graph
    76. sin (s + t)/ cos s cos t = tan s + tan t

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    https://brainmass.com/math/trigonometry/trigonometric-functions-196092

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    Solution Summary

    This provides several examples of finding trigonometric functions, writing trigonometric expressions in terms of sine and cosine, graphing, and performing operations on trigonometric functions.

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