Challenging O Level Additional Maths (A Maths TKG) Trigonometry questions Q1 Free download Exam papers
Challenging O Level Additional Maths (A Maths TKG) Trigonometry questions Q1 Free download Exam papers
Thinking process:
sin (-A) = - sin A
sin (90 - A) = cos A
cos (90 - A) = sin A
cos (-A) = cos A
tan (-A) = - tan A
Thinking process:
sin (-A) = - sin A
sin (90 - A) = cos A
cos (90 - A) = sin A
cos (-A) = cos A
tan (-A) = - tan A
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