Introduction to Trigonometry and Law of Sines

• a)
• b)
• c)
• d)

If A + B = 90°, Cot B = ¾, tan A = _______

• ¾

• ¼

• ⅓

• ½

Say 'TRUE' or 'FALSE'
The values of cosec θ and sec θ cannot be smaller than 1

• TRUE

• FALSE

• 1
• 2
• ½
• None of the above

In triangle ABC, BC =1 cm, AC =1 cm ,then tan A is 

• 0

• 1

• 2

• -1

In triangle ABC, BC =3 cm, AB =5 cm ,then tan A is 

• 3/5

• 4/5

• 3/4

• 4/3

In triangle ABC, BC = 4 cm, AB =5 cm ,then cot A is 

• 3/5

• 4/5

• 3/4

• 4/3

In triangle ABC, BC = 4 cm, AB =5 cm ,then sin A is 

• 3/5

• 4/5

• 3/4

• 4/3

In triangle ABC, BC = 4 cm, AB =5 cm ,then cos A is 

• 3/5

• 4/5

• 3/4

• 4/3

In triangle ABC, BC = 5 cm, AB =13 cm ,then tan B is 

• 5/12

• 12/5

• 5/13

• 12/13