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Suppose you know that ∠S and ∠Y are complementary, and that m∠S = 2(m∠Y) − 45°. Find m∠Y.
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Nov 2, 2019
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Suppose you know that ∠S and ∠Y are complementary, and that m∠S = 2(m∠Y) − 45°. Find m∠Y.
Mathematics
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Srinivasan Ramu
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If S and Y are complementary, that means they add to 90.
So S + Y = 90
And S = 2Y - 45
Use substitution to plug 2Y - 45 in for S.
(2Y - 45) + Y = 90
3Y - 45 = 90
3Y = 135
Y = 45
If Y equals 45, then S also equals 45 since S+Y=90.
Grmihel
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Nov 7, 2019
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