Proving Trig Equations

• A
• B
• C
• D

• A
• B
• C
• D

Solve sinθ = ½ on θ∈[0, 2π)

• θ = π / 6,  7π / 6

• θ = π / 6,  5π / 6

• θ = 5π / 6,  7π / 6

• θ = 7π / 6,  11π / 6

TRUE or FALSE:
There is NO SOLUTION to sinθ = -1.

• TRUE

• FALSE

• (cos/sin)(sin/cos)

• cos

• sin

• (sin/cos)(cos/sin)

• Both A and B

• Neither A nor B

Which of the following would be a step to prove the following identity?

• (1/ sin x) - (1 / cos x)

• (cos x - sin x) / ( sin x)

• (cos x - sin x) / (cos x)

• (1/ sin x cos x)

For what numbers x, 0 e x e2 ext{π}, does sin x= -1

• π/2, 3π/2

• 3π/2

• none

What is a step to verifying this identity?

• (cosx/sinx)(sinx/cosx)

• cosx

• sinx

• (1/tanx)(1/cotx)

For what numbers x, 0 e x e2 \pi, does sin x =1

• π/2, 3π/2

• π/2

• 0, 2

• none