Question

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In ΔPQR, ∠P and ∠Q are complementary angles.

Answer 1

cos P + cos Q   = 7/5  if In ΔPQR, ∠P and ∠Q are complementary angles and  sin Q= 4/5

Step-by-step explanation:

Complete Question :

if  sin Q= 4/5 , then cos P + cos Q  = ?

sin Q= 4/5  => Cos(90 - Q)  = 4/5

=> Cos P = 4/5

Cos²Q  = 1 - Sin²Q

=> Cos²Q  = 1 - (4/5)²

=> Cos²Q  = (3/5)²

=> CosQ  = 3/5

cos P + cos Q  

= 4/5 + 3/5

= 7/5

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Answer 2

Answer:

$= > \frac{7}{5}$

Step-by-step explanation:

hope its help u