Given:
In ΔABC, AB = 5 unit, BC = 2 unit and ∠C = 90°
To find the The value of ∠B.
Formula
By Trigonometric Ratio we know,
![cos \ \theta=\frac{adj}{hyp}](https://tex.z-dn.net/?f=cos%20%5C%20%5Ctheta%3D%5Cfrac%7Badj%7D%7Bhyp%7D)
Let us take ∠B = θ
With respect to θ, BC is the adjacent side and AB is the hypotenuse.
So,
![cos \ \theta=\frac{BC}{AB}](https://tex.z-dn.net/?f=cos%20%5C%20%5Ctheta%3D%5Cfrac%7BBC%7D%7BAB%7D)
![cos \ B=\frac{2}{5}](https://tex.z-dn.net/?f=cos%20%5C%20B%3D%5Cfrac%7B2%7D%7B5%7D)
![B=cos^{-1} (\frac{2}{5} )](https://tex.z-dn.net/?f=B%3Dcos%5E%7B-1%7D%20%28%5Cfrac%7B2%7D%7B5%7D%20%29)
![B = 66.42^{\circ}](https://tex.z-dn.net/?f=B%20%3D%2066.42%5E%7B%5Ccirc%7D)
Hence, the value of ∠B is 66.42°.
Answer:
Step-by-step explanation:
50 + 30 = 80
Answer:
The number divided by 2 that equals 4151 remainder 1 is 8303
Step-by-step explanation:
The number divide by 2 that equals 4151 remainder 1 can be gotten as
(2 × 4151) + 1 = 8303
5/10 and 2/10 beacuse tenth is the bottom number