Grade 11 maths
Simplify cos 980°
Solution:cos 980° = cos (2 × 360° + 260°) = cos 260°
= cos (270° - 10°) = − sin 10°
Practice Questions:
1)Find tan 735°
2)Resolve into partial fractions
x2+ x + 1 _________x2 − 5x + 6
To know more on:
Solving functions
Square root of 125
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