3. tan a= P(a) in QII 6. cosa = P(a) in QIV 5

Q: Prove the identity. Work on one side only. cos(4x) = 1 – 8 sin² x + 8 sin²x

A:

Q: Find the value of x in each of the following )tan 3x sin 45 .cos 45 .+sin 30

A:

Q: Find the expression, identical to the given tan(5x)

A: Given the trigonometric identity tan(5x)

Q: 1+sin x 4 15. Evaluate o cos2 x

A: Integral of sec^2x is tanx and secxtanx is secx

Q: Give the exact value of sin (cos ()). 3

A: The objective is to find the exact value of the trigonometric function.

Q: 4. Find the exact value (in exact form) of sin

A: cos(2x) = 1-2sin2(x)

Q: Assume that sin A = 0.81, cos A = 0.59, sin B = 0.91, and cos B = 0.41. Find the given quantity…

A:

Q: If cos(0) 7. and 0 is in the 4th quadrant, find sin(0) 8. sin(A)

A: Since, cos θ=78and θ is in the fourth quadrant.Our Aim is to find sin θ=?

Q: simplify tan(a), if cos(a)= 4/7

A:

Q: 2/5 If cos a = and sin a < 0, find the exact value of cos (a +) Show the formulas you are using.

A: The trigonometric function value is given by cosα = 255 and sinα&lt;0 To evaluate : The value of…

Q: Given sin0= 8/17 and cos0

A: