To do with COS, TAN and SIN

Step-by-step explanation:

The answers are BC = 6.3/ cos71 = 19.351 and BC = 6.3 / sin 19 = 19.351

Step-by-step explanation:

cosB =

or, cos 71 =

or,BC =

= 6.3/ cos71 = 19.351

Here, ∠C = 180 - (90 + 71 ) = 19

sin19 =

or, sin 19 = AB/ BC

or, BC = AB /sin 19

= 6.3 / sin 19 = 19.351

We cannot find BC in terms of tan as tan means perpendicular/ hypotenuse. BC is the hypotenuse and that is got eliminated.

Here is the explanation.

g = (2, 2)

step-by-step explanation:

given the ratio is 1 : 1 then f is the midpoint of eg

let the coordinates of g = (x, y)

using the midpoint formula

(0 + x) = 1 ( multiply both sides by 2 )

0 + x = 2 ⇒ x = 2

similarly

(4 + y) = 3 ( multiply both sides by 2 )

4 + y = 6 ( subtract 4 from both sides )

y = 2

coordinates of g = (2, 2)