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In this lesson, we will learn how to find the values of quadrantal angles.

Q1:

Find the value of s e c 1 8 0 β .

Q2:

Two points π΄ and π΅ lie on the unit circle centered at the origin π such that the coordinate of π΄ are ( 1 , 0 ) and β π΄ π π΅ = π 3 .

Which of the following properties of β³ π π΅ π΄ do you need to use to find the coordinates of point π΅ ο» π 3 , π 3 ο c o s s i n .

Hence, find c o s π 3 and s i n π 3 .

The line π π΅ intersects the line π₯ = 1 at π ( 1 , π¦ ) π . The triangle π΄ π πΆ is formed by reflecting β³ π π π΄ in the line π΄ π . What kind of triangle is the triangle π π πΆ ?

Find π΄ π ο» π 3 ο i . e . , t a n .

Q3:

Find the value of c o t 1 8 0 β .

Q4:

Find the value of c o s π where π is the measure of an angle in standard position whose terminal side passes through ( 4 , 0 ) .

Q5:

Find the value of c s c 9 0 β .

Q6:

Find the value of c o s 0 .

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