Cos48 . Cos12 How to solve this question I cant understand the last step for this sum
Cos48 . Cos12 How to solve this question
I cant understand the last step for this sum
Adarsh Manoharan , 6 Years ago
Grade 11
Trigonometry> Cos48 . Cos12 How to solve this question ...
1 Answers
Arun
Dear student
multiply and divide by cos 72
cos 12 cos 48 cos 72 / cos 72
cos 36 / cos 72 = cos 36 / sin 18
now we know these values
Approved Last Activity: 6 Years ago
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