Question

PLEASEEEE HELPPP THIS IS DUE AND I DONT UNDERSTAND

Answer 1

4.2² + (IJ)² = 5.6²

(IJ)² = 5.6² - 4.2² = 31.36 - 17.64 = 13.72 = 1,372/100

√1,372 = 2√343 = 14√7

IJ = √(1372/100) = (14/10)√7 = (7/5)√7 = about 3.7

Set your calculator to degree mode.

`\cos(h) = (4.2)/(5.6) = (3)/(4)`

`h = { \cos}^( - 1) (3)/(4) = 41.4\: degrees`

H = about 41.4°

I = 90° - 41.4° = about 48.6°