Question

Given that sinα = 1/2 and cosβ = 1/2 , then the value of (α + β) is (A) 0° (B) 30° (C) 60° (D) 90°

Answer 1

Answer:

Step-by-step explanation:

assumethat alpha and beta are acute angled.

sin alpha = 1/2 means that

alpha = 30°

cos beta = 1/2 means that

beta = 60°

alpha + beta = 90°.

Answer 2

Answer:

The correct option would be (d) 90°.

∴α+β=30∘+60∘=90∘

Explanation:

According to the given data, sinα=1/2=sin30∘    [∵sin30∘=12]

⇒α=30∘

And   cosβ=1/2=cos60∘    [∵cos60∘=12]

⇒β=60∘

∴α+β=30∘+60∘=90∘

To learn more, please visit:

https://brainly.in/question/15432181

https://brainly.in/question/12574606

#SPJ3