Gabriela needs to find the cosine of . If she knows that cos=, how can she use the double angle formula to find cos Show what she would do.

Q: (a) Write the equation in slope-intercept form, and determine the slope and y-intercept. (b) Graph…

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Q: A ferris wheel has a diameter of 24 metres. The bottom of the wheel is 2 metres above the ground.…

A: We need to derive a sine or cosine equation that describes the rotation of the wheel.

Q: 4. A straight river flows north at a speed of 3 mi/h. A boater attempting to cross the river heads…

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Q: How was theta and phi determine?

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Q: Prove that an angle of 0 radians is constructible if and only if the real number cose(sine)…

A: Since θ is constructible, by definition, (cosθ, sinθ) is a constructible point.

Q: Why do we use radians rather than degrees in Grade 12 math? You may use examples to explain your…

A: We use radians rather than degrees because of below reasons.

Q: Solve the D. E. to the I. V. P. sinx(e-y + 1)x' – cosx = 1, y(0) = 0 %3D %3D (1 – e') (1 + cos.x) =…

A: We will find out the required solution.

Q: 2) Use a double-angle formula to simplify: sin (10z) cos (5r)

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Q: Write an equation linking the height h of the balloon to the angle theta. a. cos theta= 21/h b. cos…

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Q: 15. сos

A: Question 15,Given,         cos-112

Q: 5. Simplify the expression cos² (18°) - sin² (18°) to a single trig function of an angle

A: The given expression is