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Home Q & A Board Science-Related Homework Help Mathematics Pre-calculus and Functions
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emilyliv emilyliv
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3 years ago
Angle θ is a principal angle that lies in quadrant 2 such that 0° ≤ θ ≤ 360°. Given each trigonometric ratio.
i) determine the exact values of x, y, and r

b) cot θ = -4/3
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#1
Educator
3 years ago
Hi emilyliv

Here's the answer:
emilyliv Author
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#2
3 years ago
what would be the r value?
wrote...
#3
Educator
3 years ago
Forgot that, just use the pythagoras theorem:

a^2 + b^2 = c^2

a,b can be either x or y:

(-4)^2 + (3)^2 = c^2

16 + 9 = c^2
25 = c^2
5 = c

r, therefore, has to be 5
emilyliv Author
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#4
3 years ago
alright thanks!
wrote...
#5
Educator
3 years ago
Welcome Slight Smile
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