The hypothenuse is the opposite side of the right angle
so that means that in this triangle the hypotenuse is 7
The value of cos A is √(1 + x²)/ (1 - x²) /√1 + x
<h3>Trigonometric ratios</h3>
It is important to note that
sin A = opposite/ hypotenuse
cos A = adjacent/ hypotenuse
Then,
opposite = 
Hypotenuse = 
Let's find the adjacent side using the Pythagorean theroem



cos A = x/hypotenuse

cos A = √(1 + x²)/ (1 - x²) /√1 + x
Thus, the value of cos A is √(1 + x²)/ (1 - x²) /√1 + x
Learn more about trigonometric identities here:
brainly.com/question/7331447
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The equation is
8x +7=125
Answer:
228 grams
Step-by-step explanation:
500/2=250
7*4=28
300-250=50
250-50-+28=228
Answer:
15
Step-by-step explanation: