trig and pythag

Question	Answer
what is pythagoras' theorem	a² + b² = c²
what are the formula triangles for sin, cos and tan?	Image: Screenshot+2020 03 01+At+18.19.07 (binary/octet-stream)
name the calculation to find an angle of a right angled triangle, when the hypotenuse is 6cm and the opposite is 3 cm	sin*-1 (3/6)
name the values of sin30, cos30 and tan30	1/2, √3/2, 1/√3
name the values of sin60, cos60 and tan60	√3/2, 1/2, √3
name the values of sin45, cos45, and tan45	1/√2, 1/√2, 1
give the values of sin0, cos0, and tan0	0, 1, 0
name the values of sin90 and cos90	1, 0
name the sine rule	a/sinA = b/sinB = c/sinC
name the cosine rule	a² = b² + c² - 2bc cos A
how can you find the area of a triangle using trig	area = 1/2 ab sinC
in what instance would you use the sin rule	when you have two angles and any side, or two sides and an angle not enclosed by them
in what instance would you use the cosine rule	when you have two sides plus the angle encloses, or all three sides and no angles
in terms of vectors, what does a + b mean, and c - d mean.	a + b means go along a and then b c - d means go along c, then backwards along d
how do you add and subtract column vectors	add/subtract the top and bottom separately
what happens when you multiply a vector by a positive number, and a negative number	positive changes its size but not direction, negative changes direction and size

Resource summary

	Created by lizabeth rawson over 5 years ago