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24-01-2020
Mathematics

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If angle X and angle Y are complementary angles which must be true?

If angle X and angle Y are complementary angles which must be true class=

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jimohfawwazajibola25 jimohfawwazajibola25

24-01-2020

Answer:

sinx = cosy

Step-by-step explanation:

option D is true because of the relationship between cos and sine

costheta = sine(90 - theta)

sine x = cos (90-x)

but x + y = 90

sine x = cos(x + y -x)

sineX = cos Y

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