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Grade 11 Trigonometry CCSS: HSF-TF.C.9

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What is the missing reason in step 15?
  1. Addition Property of Equality
  2. Pythagorean Identity
  3. Substitution Property of Equality
  4. Given
Grade 11 Trigonometry CCSS: HSF-TF.C.9

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What is the missing reason in step 10?
  1. Trigonometric Identity
  2. Length of a line segment
  3. Pythagorean Identity
  4. Law of Sines
Grade 11 Vectors CCSS: HSN-VM.B.4, HSN-VM.B.4a

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Grade 11 Trigonometry CCSS: HSF-TF.C.9

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What is the missing reason in step 7?
  1. Substitution Property of Equality
  2. Addition Property of Equality
  3. Identity Property
  4. Pythagorean Theorem
Grade 10 Similar and Congruent Figures CCSS: HSG-SRT.B.4

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What is the missing reason in step 34?
  1. Binomial Expansion Theorem
  2. Addition Property of Equality
  3. Pythagorean Theorem
  4. Perimeter of a triangle
Grade 11 Trigonometry CCSS: HSF-TF.C.9

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What is the missing reason in step 18?
  1. Reciprocal Identity
  2. Radii of the same circle are equal
  3. Transitive Property of Equality
  4. Pythagorean Theorem
Grade 12 Trigonometry CCSS: HSF-TF.C.9

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What is the missing reason in step 10?
  1. SAS postulate of congruence
  2. Definition of right triangles
  3. HL postulate of congruence
  4. Pythagorean Theorem
Grade 11 Trigonometry CCSS: HSF-TF.C.9

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What is the missing explanation in step 6?
  1. Pythagorean Identity
  2. Cancel like factors
  3. Substitution Property of Equality
  4. Division Property of Identity
Grade 9 Triangles
If two angles of one triangle are congruent to two angles of another triangle, then the third pair of angles are congruent.
  1. Triangle Sum Theorem
  2. Third Angles Theorem
  3. Pythagorean Theorem
  4. Exterior Angle Theorem
Grade 10 Similar and Congruent Figures CCSS: HSG-SRT.B.4

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What is the missing reason in step 6?
  1. Definition of a right triangle
  2. Pythagorean Identity
  3. Sum of angles in a triangle equals 180°
  4. Given
Grade 10 Area
Which formula is included in a Postulate?
  1. Area of a rectangle
  2. Area of an equilateral triangle
  3. Pythagorean theorem
  4. Surface area of a cylinder
  5. Area of a square
Grade 10 Pythagorean Theorem and Applications
Grade 11 Trigonometry CCSS: HSF-TF.C.8
Which of the following is an alternate form of the Pythagorean Identity? Choose all correct answers.
  1. tan2(θ)+sin2(θ)=1
  2. tan2(θ)+1=sec2(θ)
  3. 1+sec2(θ)=cot2(θ)
  4. 1+cot2(θ)=csc2(θ)
Grade 11 Trigonometry CCSS: HSF-TF.C.9

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What is the missing reason in step 11?
  1. Ratios of right triangles
  2. SAS Congruence Theorem
  3. Pythagorean Theorem
  4. SAS formula for area of a triangle
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 Trigonometry CCSS: HSF-TF.C.9

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What is the missing explanation in step 1?
  1. Definition of tangent
  2. Pythagorean Identity
  3. Law of Sines
  4. αα=1, ββ=1
Grade 10 Pythagorean Theorem and Applications CCSS: HSG-SRT.C.8
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