Given that #sin theta cos theta =7/50# and #0^0 < theta < 90^0#. Find the value of #cos theta#.?
Help pls...
Help pls...
2 Answers
Jun 22, 2018
Explanation:
Solving the equation
in the given interval we get
so we gat
Jun 22, 2018
Explanation:
Use trig identity: sin 2t = 2sin t.cos t
In this case:
Calculator and unit circle give 2 solutions for 2t:
a. 2t = 16.26 + k360
b. 2t = 163.74 + k360
Answers for (0, 90)
cos (8.13) = 0.99
cos (81.87) = 0.14