If tana 3/4 then cos2a-sin2a
WebSolution Given A = 30° cos2A = cos 2 (30°) = cos 60° = 1 2 = 3 4 – 1 4 = 1 2 A A 1 – tan 2 A 1 + tan 2 A = 1 – tan 2 30 ° 1 + tan 2 30 ° = 1 – 1 3 1 + 1 3 = 2 4 = ' (1)/ (2)` ∴ cos 2A = A A A A cos A – sin 2 A = 1 – tan 2 A 1 + tan 2 A Concept: Trigonometric Ratios of Some Special Angles Is there an error in this question or solution? WebIf sin α = 3 4, then cos α is - Q8. If the length of a shadow cast by a pole is √3 times the length of the pole, then the angle of elevation of the sun is - Q9. A tower stands vertically on the ground. From a point on the ground 20 m away from the foot of the tower, the angle of elevation of the top of the tower is 60° then height of the tower is
If tana 3/4 then cos2a-sin2a
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WebUntitled - Free download as PDF File (.pdf), Text File (.txt) or read online for free. Web22 dec. 2024 · If tanA=3/4 then find sin2A and cos 2A Advertisement gugulothmohanjay is waiting for your help. Add your answer and earn points. Answer 1 person found it helpful …
WebAt a football stadium, 4% of the fans in attendance were teenagers. If there were 260 teenagers at the football stadium, what was the total number of people at the stadium? Answers: 2 Show answers Another question on Mathematics. Mathematics, 21.06.2024 18:00 ... WebHere you will learn what is the formula of cos 2A in terms of sin and cos and also in terms of tan with proof and examples. Let’s begin – Cos 2A Formula : (i) In Terms of Cos and Sin Given below are all the formulas for cos 2A. (i) cos 2A = c o s 2 A – s i n 2 A (ii) cos 2A = 2 c o s 2 A – 1 or, 1 + cos 2A = 2 c o s 2 A
WebSolution: We have, sinA = 53 ⇒ cosA = 1−sin2A = 1− 259 = 2516 = 54 and tanA = cosAsinA = 4/53/5 = 43 Now, sin2A = 2sinA⋅ cosA = 2× 53 × 54 = 2524 cos2A= 1−2sin2A = 257 and tan2A= 724 WebHey there! We receieved your request. Stay Tuned as we are going to contact you within 1 Hour
WebIf 7 sin 2A+3cos 2A=4 show that tan A = 31 Easy Solution Verified by Toppr Given 7sin 2A+3cos 2A=4 4sin 2A+3(sin 2A+cos 2A)=4 4sin 2A+3=4 4sin 2A=1 sin 2A= 41 sinA= 21 …
WebIf 3cotA=4, check whether 1−tan2A 1+tan2A =cos2A−sin2A. Q. If 3 cot A = 4, check whether 1 - tan 2 A 1 + tan 2 A = cos 2 A - sin 2 A or not. Q. If 3cotA=4, then 1−tan2A … hr director jobs east midlandsWebIf and tan A = 3 4 and A + B = 90 ° then what is the value of cot B? Advertisement Remove all ads Solution Given that: A + B = 90 ° tan A = 3 4 A+B=90° ⇒B=90°-A ⇒ cot B = cot ( 90 ° - A) ⇒ cot B = tan A ⇒ cot B = 3 4 [ cot ( 90 ° - A) = tan A] Hence the value of cot B is 3 4 Concept: Trigonometric Ratios of Complementary Angles hr director jobs birminghamWebIf a tanA = b , then a cos2A + b sin2A is equal toIf tantheta=b/a, find the value of acos2theta+bsin2theta AboutPressCopyrightContact … hr director interview questions pdfWebWe know that cos2A = (1-tan^2 A)/ (1+Tan^2 A) and sin2A= 2tanA/ (1+tan^2 A). tanA = b/a acos2A+bsin2A =a { (1-tan^2 A)/ (1+tan^2 A)} +b {2tanA/1+tan^2 A) =a {1- (b^2/a^2)}/ {1+ (b^2/a^2)} +b (2b/a)/ {1+ (b^2/a^2)} =a (a^2-b^2)/ (a^2+b^2) + 2b^2 a/ (a^2+b^2) = { {a (a^2-b^2)+2ab^2}/ ( (a^2+b^2) = {a (a^2-b^2+2b^2)/ (a^2+b^2) hr director jobs in atlanta gaWebHow to prove the following equation? \begin{eqnarray} \sin 3A+\cos 3A&=&\left(\cos A-\sin A\right)\left(1+2\sin 2A\right)\\ \end{eqnarray} Let's start with the left ... hr director jobs indeedWeb26 feb. 2024 · if sinA=3/5 find value of sin2A, cos2A, tan2A, tan4A 1,424 views Feb 26, 2024 15 Dislike Share Save Ford Tech 2.11K subscribers Subscribe #math sinA = 3/5 … hr director job academy trustWeb9 dec. 2024 · If tan A = 3/4 then sin A =3/5 (from trigonometric functions) cos A = 4/5 Now RHS cos 2 A – sin 2 A = (4/5) 2 – (3/5) 2 = 16/25 – 9/25 = 7/25 Therefore LHS = RHS (1 – tan 2 A)/ (1 + tan 2 A) = cos 2 A – sin 2 A Hence Proved Similar Questions Question 1: What is the exact value of sin 270? Solution: Here sin is positive only in 1st and 2nd Quadrant. hr director jobs in east africa