Question

hi

Answer 1

http://easycalculation.com/trigonometry/triangle-angles.php

Answer 2

http://www.mathwarehouse.com/trigonometry/sine-cosine-tangent-practice3.php

Answer 3

\[\sin \theta=\frac{ perpendicular }{ hypotenuse }\]

Answer 4

\[\huge \cos \theta=\frac{ Base }{ Hypotensue }\]

Answer 5

for the 1st one
sin theta=40/41
cos theta=9/41

Answer 6

for the 2nd one
sin theta=3/5
cos theta=4/5