Mary's blogg #6

this week we learned about right triangles, the most important ones to remember are sin, cos,and tan. An easy way to remember these is SOHCAHTOA.

sin(theta)=opposite/hypotenuse

cos(theta)=adjacent/hypotenuse

tan(theta)=opposite/adjacent

you can find all the parts of the triangle with just the ones on top, but if they ask for something specific like csc, sec, or cot,you go by this

csc(theta)=hypotenuse/opposite

sec(theta)=hypotenuse/adjacent

cot(theta)=adjacent/opposite

this will only work if you are given a RIGHT triangle, where the hypotenuse will be opposite of the right angle.

When you are given an angle and the right angle, you will go and find the other angle inside the triangle, but you should still always use the one you are given incase you have made a mistake, because if you made a mistake on that, your whole problem will be WRONG!

Example.

A=90 C=65 and a=18

you draw your triangle and use 180-90-65, to get your B angle.

then you use cos to find c

and you use sin, to get b