Q2. Given that sin α = 1/2 and cos β = 1/2, then the value of (α + β) is

Question

(a) 0°
(b) 30°
(c) 60°
(d) 90°

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swatiqna 3 years 2021-12-23T10:37:34+00:00 1 Answer 5 views Enlightened 0

Answer ( 1 )

    0
    2021-12-23T10:38:52+00:00

    Answer: d
    sinα=1/2
    ∵sin300=1/2
    ∴α=300

    Cosβ=1/2
    ∵cos600=1/2
    ∴β=600
    Hence, α+β=300+600
    α+β=900

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