Question

Sin D =

•
sin E =
COS D =
cos E =
tan D =
• tan E =
please help with number 1!!!

Answer 1

Explanation:

The hypotenuse of the triangle is hyp = 29

For angle D, the opposite is opp = 20.

sin D = opp/hyp = 20/29

Use Pythegorium theorem, DF =
`\sqrt{29^(2)-20^(2)} = 21`

For angle D, DF is adjacent side (adj) = 21

cos D = adj/hyp = 21/29

tan D = sin D/cos D = (20/29)/(21/29) = 20/21

Or tan D = opp/adj = 20/21

Since D + E = 90 degrees, so

sin E = cos D = 21/29

cos E = sin D = 20/29

tan E = 1/tan D = 21/20