Web2 sep. 2024 · If 2sin 2 β – cos 2 β = 2, then β is (a) 0ᵒ (b) 90ᵒ (c) 45ᵒ (d) 30ᵒ Share with your friends 0 Follow 0 N Dubey, Meritnation Expert added an answer, on 2/9/21 This conversation is already closed by Expert Was this answer helpful? 0 View Full Answer Web23 jan. 2024 · If 2sin2β−cos2β=2, then β is (a) 0∘ (b) 90∘ (c) 45∘ (d) 30∘ 8. If the angles of ABC are in ratio 1:1: 2, respectively (the largest angle being angle C ), then the value of cosecBsecA−cotBtanA is (a) 0 (b) 21 (c) 1 (d) 2 3 9. A girl of height 90 cm is walking away from the base of a lamp-post at a speed of 1.2 m/s.
Ques 7 (MCQ) - If 2sin^2 β – cos^2 β = 2, then β is - teachoo
Web17 jan. 2024 · Explanation: Left Hand Side: Use the identity sin2β +cos2β = 1 cos2β− sin2β = (1 −sin2β) −sin2β = 1 − sin2β − sin2β = 1 − 2sin2β ∴ = Right Hand Side Answer link WebAnswer (1 of 14): sinA+sinB=2, we know that, the maximum value of the sine of an angle is 1. This is the sine of 90 degrees only. As, the sum of two sine of two angle is 2, so, the … haze exotics
Solved If 0≤β<2π, find all values of β that satisfy the - Chegg
Web2 jul. 2024 · If sin β is geometric mean between sin α and cos α, then cos2 β is equal to. jee; jee mains; Share It On Facebook Twitter Email. 1 Answer +3 votes . answered Jul 2, … WebSolution The correct option is A 2 tan β Explanation for the correct option: Finding the value of tan α: Given ⇒ cos 2 α = ( 3 cos 2 β – 1) ( 3 – cos 2 β) …. ( i) ⇒ tan 2 α = ( sin 2 α) ( cos 2 α) = ( 2 sin 2 α) ( 2 cos 2 α) = ( 1 – cos 2 α) ( 1 + cos 2 α) Substituting in equation 1 WebIf AM and PN are altitudes of קABC and קPQR respectively and AB2 : PQ2 = 4 : 9, AM:PN = (a) 16:81 (b) 4:9 (c) 3:2 (d) 2:3 7. If 2sin2β – cos2β = 2, then β is (a) 0o (b) 90o (c) 45o … going through a separation with husband