G.SRT.7 Explain and use the relationship This directly relates to the co-function This is not a critical concept for future between the sine and cosine of relationship between these two ratios. work but it does represent a complementary angles. The use of a trigonometric table conceptual understanding of the would be essential here to see the ratios found in a triangle and so it is pattern that . included here. (1) The student will be able explain the co-function nature of sine and This is a very direct objective – 1 Use a trigonometry table to cosine. establish the co-function relationship – between Sine and Cosine. discover this relationship. Students (2) The student will be able to easily find values that are equal in the calculate values that make sine Sine and Cosine columns. Then the and cosine equal. natural questions to ask are why and when are these values equivalent? CONCEPT 1 Explain the relationship between the sine and cosine of complementary angles. – The trigonometry table can reveal a number of patterns that sometimes get hidden in calculator only use. PATTERN #1 Identical Sine and Cosine Values –
G.SRT.7 Explain and use the relationship between the sine and cosine of complementary angles. This directly relates to the co-function relationship between these two ratios. The use of a trigonometric table would be essential here to see the pattern that . This is not a critical concept for future work but it does represent a conceptual understanding of the ratios found in a triangle and so it is included here. (1) The student will be able explain the co-function nature of sine and cosine. (2) The student will be able to calculate values that make sine and cosine equal. This is a very direct objective – establish the co-function relationship between Sine and Cosine. 1 – Use a trigonometry table to discover this relationship. Students easily find values that are equal in the Sine and Cosine columns. Then the natural questions to ask are why and when are these values equivalent? CONCEPT 1 – Explain the relationship between the sine and cosine of complementary angles. The trigonometry table can reveal a number of patterns that sometimes get hidden in calculator only use. PATTERN #1 – Identical Sine and Cosine Values
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