Trigonometry Quiz 8 – Punjab Meritorious School Preparation Portal

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If cos (A – B) = 3/5 and tan A tan B = 2,

cosA.cosB=-1/5

sinA sinB=-2/5

cos (A + B) =-1/5

sin A cos B=4/5

Question is mentioned below :

1

½

2

3

Question is mentioned below :

tan(A-B)

tan(A+B)

cot (A-B)

cot (A+B)

Question is mentioned below :

If A lies in the second quadrant and 3tan A + 4 = 0, the value of 2 cot A–5 cos A + sin A is equal to

-53/10

-7/10

7/10

23/10

Question is mentioned below :

1

-1

0

2

Question is mentioned below :

tan 3A -tan 2A-tan A =

tan 3A tan 2A tan A

-tan 3A tan 2A tan A

tan A tan 2A -tan 2A tan 3A -tan 3A tan A

0

If tan A= 0.5, then tan(3A) =

9/2

11/2

7/2

-1/2

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