# maths p33 nov 2010

#### Mortal9090

question 8-i-(b)

Hence, in each of the following cases, find the smallest positive angle q which satisfies the
equation

how to solve half theta?

do u need help man
Mortal9090 said:
question 8-i-(b)

Hence, in each of the following cases, find the smallest positive angle q which satisfies the
equation

how to solve half theta?

#### Mortal9090

do u need help man
Mortal9090 said:
question 8-i-(b)

Hence, in each of the following cases, find the smallest positive angle q which satisfies the
equation

how to solve half theta?

indeed.

#### spanishswan

4cos(.5theta-52.24)=3
.5theta-52.24=41.4,318.6
.5theta=93.64,370.8 (out of range so subtract 360)
theta 187.2,21.7
asked smaller angle therefore ans= 21.7

#### lotto

thanks!! i too was having problems with that question!!

#### lotto

but i dont get why it's out of range??

wth is the range!?

#### spanishswan

the range is 0 till 360 n that one is 370.8 so its out of the range

#### lotto

ohh yaaar!! kasam say!!!

i dont know y i forgot that the 4rt quadrant is cos!! i confused it with tan!!
daam!!
been doing too many past papers today!! too sleepy!! ok got to go!!

btw after how many hours iz ur exam and which paper u doing???

#### lotto

* i meant till ur examz!!

#### spanishswan

variant?32
its in about 8 t0 9 hours urs?

#### lotto

yup same 9 hours!! var 32!!

#### spanishswan

well than best of luck!!!

2 u 2!!

#### Mortal9090

lotto said:
ohh yaaar!! kasam say!!!

i dont know y i forgot that the 4rt quadrant is cos!! i confused it with tan!!
daam!!
been doing too many past papers today!! too sleepy!! ok got to go!!

btw after how many hours iz ur exam and which paper u doing???

remember it by these 4 words

1st ALL - all positive
2nd STUDENTS - only sine pos
3rd TAKE only tan pos
4th CALCULUS only cos pos

#### Kiara_S

Hey.. Sorry kinda 10 years late.. but why is the answer calculated in this way that (370.84 × 2) - 720?? Did get it.. Someone please help!!