Q) If Sin θ + cos θ = √3, then find the value of Sin θ . Cos θ
Ans: Given that Sin θ + cos θ = √3
Let’s square on both sides => (Sin θ + cos θ)2 = (√3) 2
⇒ Sin2 θ + Cos2 θ +2 Sin θ Cos θ = 3
⇒ 1 +2 Sin θ Cos θ = 3
⇒ 2 Sin θ Cos θ = 2
⇒Sin θ Cos θ = 1
Related Math Questions
- If cosec2θ (1 + cosθ)(1 – cosθ) = λ, then find the value of λ. View Detailed Solution »
- If Cos A + Cos^2 A = 1, then find the value of Sin^2 A + Sin^4 A. View Detailed Solution »
- If x = a sec(theta) + b tan theta and y = a tan theta + b sec(theta), prove that x ^ 2 – y ^ 2 = a ^ 2 – b ^ 2 View Detailed Solution »
- Let 2A + B and A + 2B be acute angles such that sin(2A + B) = (sqrt(3))/2 and tan(A + 2B) = 1 Find the value of cot(4A – 7B) View Detailed Solution »
