Think Learn Grow (TLG) Education Centre's answer to ☃️'s Secondary 4 A Maths Singapore question.

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Think Learn Grow (TLG) Education Centre
Think Learn Grow (tlg) Education Centre's answer
142 answers (Tutor Details)
1st
Factorise by grouping before finding basic angle and eliminating certain quadrants. Take note the range is 0 to 180 degrees and to round off your answer to 1 decimal place.