PL HELP WILL MARK BRAINLIEST
SHOW WORK
13. Suppose θ is an angle in the standard position whose terminal side is in Quadrant I and sin θ= 84/85. Find the exact values of the five remaining trigonometric functions of θ.

The figure shows triangle def and line segment bc, which is parallel to ef: triangle def has a point b on side de and point c on side df. the line bc is parallel to the line ef. part a: is triangle def similar to triangle dbc? explain using what you know about triangle similarity. part b: which line segment on triangle dbc corresponds to line segment ef? explain your answer. part c: which angle on triangle dbc corresponds to angle f? explain your answer. asap