6. If cos(x) = -, and xeQIV , find the exact value of each of the...
and << find the exact value of 4. If cos=- 4 a. sin e 6, tan 8 5. Prove the following identity. (sinx+cos x) =1+sin 2x 6. Ifcos(x)=5, and xc IV, find the exact value of each of the following. a.sin(2x) b.cos NI
5. Prove the following identity. (sin x + cos x) = 1+sin 2x 6. If cos(x) = , and x E QIV , find the exact value of each of the following. a.sin (2x) b.cos cos()
if cos x = -and sin x > 0, find the exact value of sin(2x) VO and simplify
Seard 2. Evaluate without using a calculator. Draw a picture. Show and label where your answer lies. What is the reference angle? Write your answer as an exact value. You must show your work. Do not skip steps. v2 2 a. sin b. tan (13) 3. Find the length of the arc s intercepted by a central angle 0 = 330 in a circle of radius r =6 in. Round your answer to the nearest tenth. 1 4. If cos...
Find the exact value of the expression cos(sin If sin = sin 2 15 find the exact value of cos(20) Solve sin 2x = cos 2x, where 0 <x<21.
If tan a= 12 5 270° <«< 360°, then find the exact value of each of the following. a. sin 2 b.cos 2 c. tan 2 a. sin IN (Simplify your answer, including any radicals. Use integers or fractions for any numbers in the expression Rationalize the denominator) CL b. cos (Simplify your answer, including any radicals. Use integers or fractions for any numbers in the expression Rationalize the denominator) c. tan (Simplify your answer, including any radicals. Use integers...
Find the exact value ① If cos(x) = - 10 / when I LX <T, then sen ( 3 ) = ? 12 If sen(x) = 2/3 when o< X < 1 2 2 I then sen (2x) = ?
Find the exact value of sinſ and cos given that cos x = 3,27 ,270° <x< 360°. [8] 4-cos e 18. cos20-5 cos 0+4 since 1+cos e
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9. tan 37 10. sec 4 11. Find sin(x + y) and cos(x + y) if cosx = - cosy = -— x is in quadrant II and y is in quadrant III. [10] 12. Find the exact value of sin 2x and cos 2x if sin x = and cos x = - [6] 5 13. Simplify tan (x + 3) to a form involving sinx, cosx, and/or tanx. [6]
6. (a) Find the exact value of tan (2 cos ()). (b) Given that sin 0 and cos 0 is negative. Find the exact value of tan(0 +T).