Tolong bantu jawab kak​

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Tolong bantu jawab kak​

Tolong bantu jawab kak​

Jawab:

trigonometri

cos θ= 12/13
tan θ =  5/12
sec θ=  13/12

sec²θ- tan² θ =
=  (13/12)²  - (5/12)²
=   169/144  -  25/144
=  144/144

= 1