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Find the exact value cos^-1(-square

  1. 1. Power reducing formulas can be used to rewrite 8sin^2 xcos^2 x as 1-cos4x. True or False?2. Find the exact value of cos15
  2. Three circles of radius 1 unit fit inside a square such that the two outer circles touch the middle circle and the sides of the
  3. i)The angle á lies between 0 and 90 and is such that 2tan sqaure á + sec square á=5-4tan á. show that3tan square á
  4. Find the exact value of the trigonometric function given the right triangle. Find cos theta. The adjacent side is 7, the
  5. P is a point on the terminal side of θ in standard position. Find the exact value of the six trigonometric functions for θ.
  6. 1. Find the exact value of 2tan pi/12 / 1-tan^2 pi/12root 3/3? 2. Given tanθ = -1/3 and with θ in quadrant IV, find the exact
  7. 1)i) use an algrbraic method to find the square root of 2+i√5. give your answer in the form x+iy, where x and y are exact real
  8. 1. Establish the identity:sin(theta+3pi/2)=-cos(theta) 2. Find the exact value of 2(theta) if sin(theta)=5/13 3. Show that:
  9. Find the exact area of the region enclosed by the square root of (x) + the square root of (y) is = 1; x = 0 and y = 0.I moved
  10. Find the exact values of cos- radians and sin 4 - radians ] 4 Square root 2/2- Square root/2 -1/2, Squareroot3/2 -square root2/2