Question

answer the above question pls​

Answer 1

Answer:

4/5

Step-by-step explanation:

we have,

(1+cos¢)(1-cos¢) = 16/25

so, 1-cos²¢ = 16/25

sin²¢ = 16/25

so, sin¢ = 4/5 ....ans.

Answer 2

$\bf\large\underline\blue{Explanation :-}$

➤ (1 + CosQ)(1-cosQ) = 16/25

➤ 1 - CosQ + CosQ - Cos2Q = 16/25

➤ 1- Cos2Q = 16/25

As we know that

Sin2Q + Cos2Q = 1

So, Sin2Q = Cos2Q - 1,,

➤ Sin2Q = 16/25

➤ SinQ = 4/5

Hope it will help uh!!