{"id":644,"date":"2014-03-02T16:41:49","date_gmt":"2014-03-02T21:41:49","guid":{"rendered":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/?p=644"},"modified":"2014-02-25T16:42:32","modified_gmt":"2014-02-25T21:42:32","slug":"math-7a-lesson-4-322014","status":"publish","type":"post","link":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/2014\/03\/02\/math-7a-lesson-4-322014\/","title":{"rendered":"Math 7A, Lesson 4, 3\/2\/2014"},"content":{"rendered":"<p>Pythagorean Theorem is the first topic we cover for this lesson. For a right-angled triangle with two sides a and b and a hypotenuse c, then we have c^2 = a^2 + b^2.<\/p>\n<p>We show two ways of proving this, and we also show how to prove the reverse, that is, if a triangle with 3 sides as a, b, and c, and c^2 = a^2 + b^2, then it is a right-angled triangle with c as its hypotenuse.<\/p>\n<p>With this theorem, not only can we solve some questions related to right-angle triangles, but also some real world scenarios.<\/p>\n<p>We talk about indirect measure with Angle of elevation and Angle of depression. Furthermore, we study the trigonometrical ratios and give the definition of sine, cosine, and tangent and how to use a calculator to get the value of the ratio from an angle,. and from a value back to an angle.<\/p>\n<p>Homework:<\/p>\n<p>Page 107, #1, #2, #3, #5, #6, #8. #10. #12, #34, #36, #37.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Pythagorean Theorem is the first topic we cover for this lesson. For a right-angled triangle with two sides a and b and a hypotenuse c, then we have c^2 = a^2 + b^2. We show two ways of proving this, and we also show how to prove the reverse, that is, if a triangle with [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0},"categories":[3],"tags":[],"_links":{"self":[{"href":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/wp-json\/wp\/v2\/posts\/644"}],"collection":[{"href":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/wp-json\/wp\/v2\/comments?post=644"}],"version-history":[{"count":2,"href":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/wp-json\/wp\/v2\/posts\/644\/revisions"}],"predecessor-version":[{"id":646,"href":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/wp-json\/wp\/v2\/posts\/644\/revisions\/646"}],"wp:attachment":[{"href":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/wp-json\/wp\/v2\/media?parent=644"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/wp-json\/wp\/v2\/categories?post=644"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/wp-json\/wp\/v2\/tags?post=644"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}