Using the the half angle formula for sine to evaluate

The video tutorial explores breaking down trigonometric expressions using sum, difference, and half-angle formulas. It focuses on applying the half-angle formula to evaluate the sine of 95 degrees, determining the reference angle, and understanding the sign based on the quadrant. The tutorial also covers calculating the cosine of 30 degrees and simplifying the resulting expression.

What is one method mentioned for breaking up trigonometric expressions?

• Using double angle formulas

• Using sum or difference formulas

• Using product-to-sum formulas

• Using Pythagorean identities

If U/2 equals 195 degrees, what is the value of U?

• 390 degrees

• 195 degrees

• 180 degrees

• 360 degrees

In which quadrant is the angle 195 degrees located?

• Second quadrant

• First quadrant

• Third quadrant

• Fourth quadrant

What is the cosine of 30 degrees?

• 1/2

• sqrt(3)/2

• sqrt(2)/2

• 0

What is the final simplified form of the expression after removing the denominator?

• sqrt(2) + sqrt(3)

• -(sqrt(3) + sqrt(2))/2

• sqrt(3) - sqrt(2)

• -(sqrt(2) - sqrt(3))/2