if 2x - 15 and 3x + 45 are complementary angles then find the value of x
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Answered by
5
Answer:
2x-15+3x+45=90 Complementry
5x+30=90
5x=60
x=12
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Answered by
15
Step-by-step explanation:
First angle = (2x - 15)
Second angle = (3x + 45)
Sum of complementary angles = 90°
Sum of complementary angles = (2x - 15) + (3x + 45)
90 = (2x - 15) + (3x + 45)
90 = 2x - 15 + 3x + 45
90 = 2x + 3x - 15 + 45
90 = 5x +30
90 - 30 = 5x
5x = 90 - 30
5x = 60
x = 60/5
x = 12
Therfore, x =. 12
Hence, First angle = (2x - 15)
= 2 × 12 - 15
= 24 - 15
= 9°
Second angle = (3x + 45)
= 3 × 12 + 45
= 36 + 45
= 81°
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