In a right triangle, one angle measures xº, where 4 == sin x° 5 . What is cos(90° - xº) ?

Q: Consider a right triangle with two other angles A and B.  Find the value of sin (A) if cos (A)=3/5?

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

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Q: Use double- and half-angle formulas to find the exact value of the expression sin 22.5°.

A: Given: sin 22.5° To find: The exact value by using double and half-angle formula.

Q: The current through 100MF capacitor is given Use the sine function to write a sinusoidal expression…

A: Find the Sinusoidal expression for the voltage.

Q: Find angle A rounded to the nearest tenth of a degree when cos A = 0.4104.

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Q: Write cos ⁡ ( θ ) in terms of sin ⁡ ( θ ) if θ is an angle in quadrant II.

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Q: What is the value of sin(135°)?

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Q: Simplify, using the double-angle formulas: 1- 2 sin2(15°)

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Q: Sketch the angle and write the sec and tan of the angle if the terminal side of the angle passes…

A: NOTE: Refresh your page if you can't see any equations. . the given point is so here we have

Q: Use a reference angle to find the exact value of cos 210 degree        -1/2

A: Let the given cosing angle be y - y = cos210Angle 210° lies in the third quadrant.So, we can take…

Q: If cos θ = 3/4, what is cos2θ?

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Q: What is the value of sin(330°)?

A: Our Aim is to tell the value of sin 330°=?

Q: What is the sin of θ = 40°?

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Q: Cos (anc tan $3 tancsin)

A: Solution: Given data, cos(arctan(√3)+arcsin(1/2))

Q: I used a half-angle formula to find the exact value of cos 100°.Determine whether the statement…

A: Given:cos 100°