Questions asked by Layla

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• Please, can anyone help me with this help to solve this question?. Verify that each x-value is a solution of the equation. 3 tan^2(5x) − 1 = 0. (a) x = pi/30 (b) x =5pi/30
  
• Use the given conditions to find the values of all six trigonometric functions. (If an answer is undefined, enter UNDEFINED.)? csc(x) = − 7/6, tan(x) > 0. how do I get :sin(x), cos(x), tan(x), csc(x), sec(x), cot(x)?
  
• Please, how do I factor the expression? Use the fundamental identities to simplify, if necessary. 1 − 2 cos2(x) + cos4(x)?
  
• Use the fundamental identities to simplify the expression. Please, someone, help me? 1 − cos2 x / sec2 x − 1
  
• Find the exact values of the sine, cosine, and tangent of the angle. 11π/12 = 3π/4 + π/6. how will I determine Sin 11π/12, Cos 11π/12, and Tan 11π/12?
  
• How do solve the equation? (Find all solutions of the equation in the interval [0, 2π). sin(2x) − sin(x) = 0
  
• Please help me to solve this, use the power-reducing formulas to rewrite the expression in terms of first powers of the cosines of multiple angles. #sin^4(5x) cos^2(5x)#?
  
• Use the product-to-sum formulas to rewrite the product as a sum or difference. 9 cos(−9β) sin 5β?
  
• Find the exact value of the trigonometric expression given that sin(u) = − 3/5, where 3π/2 < u < 2π, and cos(v) = 15/17, where 0 < v < π/2. ? cos(u−v)
  
• Use the Law of Sines to solve the triangle. please help, anyone? Thank you. A = 50°, a = 12.6, b = 13.8 Case 1 find B, C, c Case 2 find B, C, c
  
• A boat is sailing due east parallel to the shoreline at a speed of 11 miles per hour. At a given time, the bearing to the lighthouse is S 70° E, and 30 minutes later the bearing is S 63° E (see figure). The lighthouse is located at the shoreline. help?
  
• Find the angle θ (in radians) between the vectors. Help? u = 4i − j v = 20i − 5j