If 5sina=12cosa & a is an acute angle what is the value of cosec a???
Shubham , 8 Years ago
Grade 10
Trigonometry> If 5sina=12cosa & a is an acute angle wha...
1 Answers
Arun
Dear Shubham
As
5 sinA = 12 cos A
Hence
sun A/ cos A = 12/5
tan A= 12/5
Hence sin A = 12/13
Now
cosec A = 1 /sin A = 13/12
Regards
Arun (askIITians forum expert)
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