TRIGONOMETRIC IDENTITIES

Interactive Video
•
Mathematics
•
11th Grade
•
Hard
Lucky Ajueyitsi
FREE Resource
7 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pythagorean formula derivative for sines and Cosines.
Identities of Negative angles. Cosine and secants are EVEN functions.
Identities expressing trig functions in terms of their complements.
2.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Complete the sum trigonometric identity
Sin (d + r ) =
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the sine of an angle θ in a right triangle?
Adjacent side over opposite side
Hypotenuse over opposite side
Opposite side over hypotenuse
Adjacent side over hypotenuse
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is a Pythagorean identity?
secθ = 1 / cosθ
sin²θ + cos²θ = 1
tanθ = sinθ / cosθ
cos(90° - θ) = sinθ
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the value of cos(90° - θ)?
sinθ
cosθ
cotθ
tanθ
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which formula represents the double angle identity for cosine?
cos(2θ) = 1 - 2sin²θ
cos(2θ) = cos²θ - sin²θ
All of the above
cos(2θ) = 2cos²θ - 1
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do you calculate the area of a triangle using trigonometry?
1/2 * a * b * cos(C)
1/2 * a * b * sin(C)
a * b * sin(C)
a * b * cos(C)
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