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Name ________________________________________ Date _______________ Period ____ CHAPTER 5 PT.I PRACTICE QUIZ SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question. Verify the following Trigonometric Identities. 1) sin θ (cot θ + tan θ) = sec θ 2) (sin θ + cos θ) 2 + (sin θ – cos θ) 2 = 2 3) 1 1sin x + 1 1+sin x =2 sec x 2 4) sin 2 x – sin 2 y = cos 2 y – cos 2 x

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### Transcript of Name  · Web viewName _____Date _____Period ____ CHAPTER 5 PT.I PRACTICE QUIZ. SHORT ANSWER. Write...

Name ________________________________________ Date _______________ Period ____

CHAPTER 5 PT.I PRACTICE QUIZSHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.

Verify the following Trigonometric Identities.

1) sin θ (cot θ + tan θ) = sec θ

2) (sin θ + cos θ)2 + (sin θ – cos θ)2 = 2

3) 1

1−sin x+ 1

1+sin x=2 sec x2

4) sin2x – sin2y = cos2y – cos2x

5) cos2α (1 + tan2α) = 1

6) tan x + cot x = sec x csc x

7) tan x−cot xtan x+cot x

=¿sin2x – cos2x

8) sinx cos x

cos2 x−sin2 x= tan x

1−tan2 x

9) Find the exact value of sin 13π12

10) Find the exact value of tan 17π12