Trig Identities - Even/Odd Identities

Which of the following even/odd formulas is incorrect?

• sin(-x)= -sin(x)
• cos(-x)= cos(x)
• cot(-x)= -cot(x)
• sec(-x)= 1/cos(x)

What is the answer to this basic trigonometric identity?
  csc(x)

• = 1/cos(x)
• = 1/tan(x)
• 1/sin(x)
• 1/cot(x)

What is the answer to this basic trigonometric function?
sin(x)cos(x)= cot(x)

• x= ∏/4
• x= ∏/6
• x= ∏/3
• x= 2∏/3

Which of the following is the correct function?

• sin(-x)= -sin(x)
• cos(x)= cos(x)
• tan(-x)= tan(x)
• cot(-x)= 1/tan(x)

Which of the following is incorrect?

• sin(-x) = sin(x)
• cos(-x) = cos(x)
• sec(-x) = sec(x) 
• cot(-x) = -cot(x)

Sove this basic trigonometry function
tan(x)csc(x) 

• tanx
• secx
• cotx
• cscx

Find the exact value of the trig expression using Even/Odd Identities:

sin(-45) + cos(-60)

• $\frac{1+\sqrt{2}}{2}$

• $\frac{1-\sqrt{2}}{2}$

• $\frac{\sqrt{3}-\sqrt{2}}{2}$

Solve the trigonometric function
cosx ( tanx - secx)

• cotx - 1
• tanx - 1
• sinx - 1 
• cscx - 1