A box or square is drawn on the right angle triangle to show that it is a right triangle
Just solve for , then substitute back into either expression and calculate either BC or AD. The other one is then the same amount.
The one about the square is the same thing except you don't care how the figure is named because all 4 sides are equal anyway. Just set the two expressions equal to one another and then solve for
For the answer to the question above, I'll provide a solution to my answer below
sin²θ + cos²θ = 1
<span>so, cos²θ = 1 - (5/6)² => 11/36 </span>
<span>=> cosθ = ±√11/6 </span>
<span>Also, tanθ = sinθ/cosθ => (5/6)/(±√11/6) </span>
<span>i.e. tanθ = ±5/√11
</span>I hope my answer helped you. Feel free to ask more questions. Have a nice day!
Answers:
Equation 1: B
Equation 2: D
Equation 3: A
Equation 4: C
*I am pretty sure are right
