Which of the following is equivalent to cos (60° + 0 + sin(30° + 0)? cos 8 +V3 stn 0 cos e Option 1 O Option 2 V3 sin 0 2 cos 0

Q: Divide 4 (cos 60° + i sin 60°) by 2 (cos 30° + i sin 30°) in rectangular form.

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Q: Find the exact value of sin 80° cos 20° - cos 80° sin 20°.

A: Use the identity sina-b=sin a·cos b-cos a·sin b.

Q: a) Is cos(2-30°) equal to cos² 30° - sin² 30° ? Yes or No. || b) Find the value of cos(230°).

A: a) cos ( 2.30°) = cos230 - sin230

Q: b. What is the range of y = sin-12x? %3D

A:

Q: Find the value of 2 sin2 30° tan 60° – 3 cos2 60° sec2 30°

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Q: If cos a + cos B= a and sina + sin B= b, then show that 2 sin 2a + sin 2B = 2ab 1 a2 + b2

A: given: cosα+cosβ=asinα+sinβ=b we have to show that  sin2α+sin2β=2ab1-2a2+b2 R.H.S: 2ab1-2a2+b2…

Q: Show sin 3A = 3 sin A cos²A - sin A.

A: Explanation: Given that: sin3A=3sinAcos2A-sinA Concept: sin3A=3sinA-4sin3A sin2A+cos2A=1

Q: a) Evaluate the following: 1 - 2 - L {sin3t cos3t} , 3 - I {sinht sint}

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Q: evaluate exactly sin(cos-1(2/3))

A:

Q: Evaluate V2 cos sin-! 2.

A:

Q: Which of the following is TRUE? A. sin? 을 + cos? 을=D 1 2 B. sin 20 + cos² 20 = 2 %3D C. sec2 - tan?…

A: Solving LHS and comparing to RHS