Core 6: Chapter 14 Flashcards
1
Q
Calculate the percentage error if 8 degrees in radians is used as an approximation for sin(8)
A
Percentage error = absolute error / correct value x 100
8 degrees = 8/180 x pi = 0.13963 radians (to 5d.p)
Sin 8 = 0.13917
0.13963-0.13917 / 0.13917 x 100
2
Q
Cosec(theta)
A
= 1/sin (theta)
3
Q
Sec (theta)
A
= 1/cos(theta)
4
Q
Cot(theta)
A
1/tan(theta)
5
Q
Two main equations
A
1) sec^2= 1+tan^2 (theta)
2) cosec^2 = 1+cot^2(theta)
6
Q
When it says exact value?
A
Leave in terms of a fraction
