For an angle Θ with the point (12, −5) on its terminating side, what is the value of cosine? −5 12 negative 5 ove
Question
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Answers ( 2 )
Answer:
D
Step-by-step explanation:
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Given that the point (12,-5) which takes the form (x,y), This implies that:
opposite=-5
adjacent=12
thus using using Pythagorean theorem, the hypotenuse will be:
c^2=a^2+b^2
plugging the values we obtain:
c^2=(12)^2+(-5)^2
c^2=144+15
c^2=169
thus
c=13
but
cosu03b8=adjacent/ hypotenuse
therefore:
cosu03b8=12/13
Answer is option . D