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Grade 12 Complex Numbers
a + bi is an example of                   of complex numbers.
  1. trig form
  2. polar form
  3. rectangular form
  4. none of the above
Grade 12 Trigonometry
Grade 11 Trigonometry CCSS: HSG-SRT.D.10

This question is a part of a group with common instructions. View group »

What is the missing reason in step 12?
  1. Pythagorean Theorem
  2. Trig ratios in a right triangle
  3. Substitution Property of Equality
  4. Pythagorean Identity
Grade 11 Trigonometry CCSS: HSF-TF.A.2
Grade 12 Trigonometry
The eight trig identities fall into three categories. Which of the following are the three categories?
  1. reciprocals, law of sines, and law of cosines
  2. reciprocals, quotient, and pythagoreans
  3. reciprocals, tangents, and radicals
  4. none of the above
Grade 11 Complex Numbers CCSS: HSN-CN.A.2
Simplify: 8i6+6i5-5i3-3i2-7i-9
  1. -14+4i
  2. -4+4i
  3. -10i
  4. -14-18i
Grade 11 Trigonometry CCSS: HSG-SRT.D.10
Which of the following is true concerning the law of sines and right triangles?
  1. The law of sines is not valid for right triangles.
  2. The law of sines can only be proved for the acute angles of a right triangle.
  3. The law of sines can be easily proved for a right triangle, using trig ratios and the fact that sin(90°)=1.
  4. The law of sines can proved for a right triangle, and the easiest proof involves the use of the Pythagorean Theorem and the formula for the area of a triangle.