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Mathematics
Charlie Oconnor
8 March, 20:11
Is sin A is 7/10 what is Cos A
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Dario Giles
8 March, 23:14
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Cos A = (√51) / 10
Step-by-step explanation:
sin is opposite/hypothenuse
cos is adjacent/hypothenuse
Pythagorus theorem says that c² = a² + b²
10² = 7² + b²
b² = 100 - 49
b = ±√51
It doesn't make sense for a length to be a minus number therefore, we will use + √51.
Cos A = (√51) / 10
Tell me if I am wrong.
Can I get brainliest
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