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anonymous
 one year ago
Which statement is true?
A)In any right triangle, the sine of one acute angle is equal to the cosine of the other acute angle
B)In any right triangle, the sine of one acute angle is equal to the sine of its complementary angle.
C)In any right triangle, the cosine of one acute angle is equal to the cosine of its complementary angle
D)In any right triangle, the sum of the sine of one acute angle and the cosine of the other acute angle is 1
@chrisdbest
anonymous
 one year ago
Which statement is true? A)In any right triangle, the sine of one acute angle is equal to the cosine of the other acute angle B)In any right triangle, the sine of one acute angle is equal to the sine of its complementary angle. C)In any right triangle, the cosine of one acute angle is equal to the cosine of its complementary angle D)In any right triangle, the sum of the sine of one acute angle and the cosine of the other acute angle is 1 @chrisdbest

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DanJS
 one year ago
Best ResponseYou've already chosen the best response.0Think about the values for X and Y in the unit circle, where (x,y) = (cos(theta), sin(theta))

DanJS
 one year ago
Best ResponseYou've already chosen the best response.0For B as suggested, Test and see if \[\sin(\theta) = \sin(90 \theta)\]? are those two Y values the same if you use an angle less than 90 for theta...
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