Trigonometric Identities - Algebra II
Simplify cos θ tan θ
B. sin θ
Simplify 1-cos^2 θ /sin^2 θ
C. 1
Find the value of cos θ, if sin θ = 1/2; 0<θ<90
C. sqrt (3)/2
Find the value of csc θ, of cos θ = -1/4; 180<θ<270
D. -4/sqrt(15)
Find the value of sec θ, if cos θ = 2/19; 0<θ<90
D. 19/2
Simplify 5 sin θ sec θ
D. 5 tan θ
Simplify sin^2 θ cot^2 θ
D. cos^2 θ
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Describe how you can determine the quadrant in which the terminal side or angle a lies if sin a = -1/4
The sine function is negative in the third and forth quadrants. Therefore, the terminal angle must lie in one of those quadrants.
csc θ =1/sec θ
F
Explain what it means to simplify a trigonometric function.
Simplifying a trigonometric expression means writing the expression as a numerical value or in terms of a single trigonometric function, if possible.