PreCal 4-3 & 4-4 Test [SPR24]

Find the exact value if sin(x) = 15/17 and x is in Quadrant I.

Find sin(2x)

• 240/289

• 289/240

• 17/120

• 135/289

Find the exact value if sin(x) = 15/17 and x is in Quadrant I.

Find cos(2x).

• 161/225

• 289/161

• 161/289

• 64/289

Find the exact value if sin(x) = 15/17 and x is in Quadrant I.

Find tan(2x).

• 161/240

• 240/161

• 64/161

• 161/24

Find the exact value, if sin(x) = 7/25 and x is in Quadrant I.

Find sin(2x).

• 625/336

• 24/225

• 225/168

• 336/625

Find the exact value, if sin(x) = 7/25 and x is in Quadrant I.

Find cos(2x).

• 527/625

• 625/527

• 49/576

• 576/49

Find the exact value if sin(x) = 7/25 and x is in Quadrant I.

• 625/336

• 527/336

• 336/527

• 625/527

sin2u =

• (sinu)(cosu)

• 2(sinu)(cosu)

• (sinu)^2

• 2(sinu)^2

cos2u=

• 2(sinu)(cosu)

• (cosu)^2 - (sinu)^2

• 2(cosu)^2 - 2

• (sinu)^2 - (cosu)^2

If x is a positive acute angle and sin(x) = 1/2, what is sin(2x)?

• • - 1/2

• 1/2

• • - √3 / 2

• √3/2

sin(x) = 15/17, when x is in Quadrant I.

Find cos(2x)

• 240/289

• 240/161

• 289/161

• 161/289