1.) If cos (40+x) = sin30, find x.2.)If sec2 theta (1+sin theta ) (1-sin theta) = k, find k.
Aiden Mathew Denny , 7 Years ago
Grade 10
10 grade maths> 1.) If cos (40+x) = sin30, find x. 2.)If ...
1 AnswersNs
Last Activity: 7 Years ago
1 = ....x = 20 .....as Cos(40+x)= sin(90-(40+x))Therefore ........Sin(90-40-x) =sin 30=>50-x=30Therefore x = 20
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