Which of the following methods can be used to determine the value of sin(-7.5°) without using a calculator? Check all that apply Divide sin(-30°-45°) by 10 O Apply double angle formula to sin(15°) O Apply half-angle formula to sin(-30°) twice

Q: Use the sin/cos complementary relationship to determine which of the following expression is also…

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Q: Evaluate 3 .9 sin (15x) cos (15x) dx.

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Q: Find the exact value using sun and difference formulas.  sin(cos-1 5/13 - sec-1 5/4)

A: Let,I=sincos-1513-sec-154using…

Q: 3. (tan 45°) (cos30°) - (cot45°) (sin 60°)

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Q: 77. From the figure, show that sin(45° – a) = sin95°. A 40° 12 8 45° D C B

A: The given figure is, In triangle ACD,∠DAC=40°∠ACD=45°Using the angle sum property of a…

Q: -Sin(60° ) tan(210°)/cos 135° Simplify

A: find the values of sin (60°), tan(210°) and cos(135°) and plug in to given expression as following:-

Q: Find the measure of cos-1 (-0.5) in degrees and radians.

A: cos-1-0.5

Q: Simplify the expression by using a Double-Angle Formula. (a) cos² (37°) - sin² (37⁰) cos 74 (b)…

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Q: Find the exact value of each expression. Do not use a calculator. sin-1 1I know what needs to be…

A: sin-1 1

Q: Evaluate sin (195°)

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

A: The given expression is