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If cos x is approximately 0.4226, what is the measurement of x to the nearest degree? Approximately what is the sine of the angle that is complementary to x. A.25; 0.9063 B.25; 0.4226 C. 65; 0.9063 D.
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If cos x is approximately 0.4226, what is the measurement of x to the nearest degree?

Approximately what is the sine of the angle that is complementary to x.

A.25; 0.9063
B.25; 0.4226
C. 65; 0.9063
D. 65; 0.4226

User JBach
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1 Answer

2 votes

Answer:

D.

Explanation:

IF cos(x)=0.4226 then
x = cos^(-1) (0.4226) = arc(0.4226) ⇒ x=65° so Compl. x = (90° - x) = 25⁰, finally sin (25⁰) = 0.4226

User Nikitz
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