Answer:
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.
Tell me if I am wrong.
Can I get brainliest
The first one is -8+2 = -6
And the second one is 2 x 2 = 4
Gene has 45 stamps
20% = 0.20
- - 0.20 = 0.80
28*0.80 = 22.40
22.40-2 = 20.40
it cost $20.40
You already wrote the equation
