Fundamental Mathematics 1A Review

This law says that the sine of the angle divided by the length of the opposite side for each angle of triangle is equal.

• Cosine Law
• Tangent Law
• Pythagorean Theorem
• Sine Law

∠A= 30°, b= 10, and ∠C= 15°, find ∠B and a.

• ∠B = 60°, a = 5

∠B= 60°, a= 23, and c= 33, find b.

If sinθ = 14 , what is cosθ and tanθ?

Which of these is/are an example of a Pythagorean identities?

• All of the above

What is the reciprocal identity of cotθ?

What is the addition formula for sin (s + t)?

• cos(s)cos(t) - sin(s)sin(t)
• sin(s)cos(t) + cos(s)sin(t)
• cos(s)sin(t) - sin(s)cos(t)
• sin(s)sin(t) + cos(s)cos(t)

What is the subtraction formula for cos (s - t)?

• sin(s)sin(t) - cos(s)cos(t)
• cos(s + t)
• cos(s)cos(t) + sin(s)sin(t)
• cos(s)cos(t) - sin(s)sin(t)

What is the double-angle identity formula for sin (2x)?

• sin(2x) = 2sin(x)cos(x)

What is the double-angle identity formula for tan (2x)?