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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