Q16 of 78 Page 13

Find an angle θ

whose rate of increase twice is twice the rate of decrease of its cosine.

whose rate of increase twice is twice the rate of decrease of its consine


As per the given condition,



 as the rate of increase is twice the rate of decrease, hence the minus sign.





Hence,


So the value of angle θ hose rate of increase twice is twice the rate of decrease of its consine is


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