Find the acute inclination of the reflected ray 
to the 
-axis when is inclined at 
to the 
-axis and 
to the 
-axis.
Use Directional Cosines.
2017 9740 9758 A'levels Angle Directional Cosines H2 Mathematics How To Mathematics The Culture The Culture SG Trigonometry Vectors
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KS TengKS has been teaching H2/H1 Mathematics and IB mathematics for the more than 10 years. Having taught students from all various Junior Colleges, KS adapts to students' abilities and help them better understand the topics. As someone who loves to teach mathematics and sees it as a truly useful tool in life, KS seeks to enable students to appreciate math. Therefore, his tuition mission is to motivate and cultivate students to be independent and confident thinkers.
