The triangle shown has an interior angle with a measure that is 25° and an exterior angle with a measure that is 150°. What is t
he measure of the marked interior angle?
A. 75°
B. 95°
C. 105°
D. 125°
A. 75°
B. 95°
C. 105°
D. 125°
1 answer:
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sin(0) = opposite/hypotenuse = 2/5
cos(0) = adjacent/hypotenuse = sqrt21/5
tan(0) = opposite/adjacent = 2/sqrt21 * sqrt21/sqrt21 = 2sqrt21/21
cot(0) = adjacent/opposite = sqrt21/2
sec(0) = hypotenuse/adjacent = 5sqrt21/21
