关于COS TAN SIN1.If tan口萨=5/12,then find exact values of cos口萨,sin口萨,and then find the angle口萨 to the nearest degree.2.If cos口萨=-4/5 and 90°
问题描述：
关于COS TAN SIN
1.If tan口萨=5/12,then find exact values of cos口萨,sin口萨,and then find the angle口萨 to the nearest degree.
2.If cos口萨=-4/5 and 90°
答
可以用搜狗来表示特书的数学符号，在提一次吧（修改后的），给你正确答案。
答
you can use 1+tan^x=1/cos^x to figure out cosx and then you can also use cos^x+sin^x=1 to figure out sinx. i don't know what's your meaning about the question that is to find the angle x to the nearest degree. The next question you ask can be solved like above all.
Anyway, I don't know what on earth you purpos is.
答
1.若tanψ=5/12,求cosψ,sinψ的精确值,然后求出ψ的度数.
2.设cosψ=-4/5,且90
答
一头雾水