Let the unknown angle be x.
That is
sin x = 4/5
cos x = 3/5
By drawing a right triangle in the first quadrant,
hypotenuse = 5
Adjacent side = 3
opposite side = 4
That is tan x = 4/3
From the calculator,
x = arctan(4/3) = 53 deg (nearest integer)
Answer: 53 deg. (nearest integer)
Let's solve for y.<span><span>2+<span>16y</span></span>=<span><span>3x</span>+4</span></span>Step 1: Add -2 to both sides.<span><span><span><span>16y</span>+2</span>+<span>−2</span></span>=<span><span><span>3x</span>+4</span>+<span>−2</span></span></span><span><span>16y</span>=<span><span>3x</span>+2</span></span><span>Step 2: Divide both sides by 16.
16y/16 = 3x+2/16
Y=3/16x +1/8</span>
Amount owing after 11 years = 28,000(1 + 0.0375)^11
= $41,979 to nearest dollar