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: Q3/ Simplify the following expressions and Find the values? @I+ tanA -1 sec A. cPA.@ tanA sine-2…

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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: 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: Without the use of a calculator, determine the value of: tan120°. sin300°. sin135° sin120°.cos225°

A: The answer is found in step-2.

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

A: The given expression is

Q: Simplify without using a calculator. Tan(31 degrees) - cos(59 degrees) / cos (31 degrees) =

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