Find the sin and cosine of 210° using the right triangles

Q: Convert the angle -3π in radians to degrees.

A: To convert the given angle in degree.

Q: Find the sine and cosine of 450.

A: Consider the unit circle whose side AB=1 and BC=1. Use the Pythagoras theorem,…

Q: Find the sine, cosine and tangent of a half-angle

A: Given, sin(α)=3365

Q: Use the "half-angle" formulas to find the sine and cosine of 15 degress.

A:

Q: Convert the angle -105° in degrees to radians. Express your answer as a multiple of π.

A: Given angle in degree is -105o

Q: Find the sine and cosine of the acute angles in the right triangle. B 73 55 48 55 48 sin A = 73; cos…

A: we have to find sine and cosine from the given figure

Q: Find the angles in degree and radians

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: Write the expression 2 sin 15° cos 15° as the sine, cosine, or tangent of a double angle. Then find…

A: The given expression 2 sin 15° cos 15°   Formula: sin2x=2sinxcosx

Q: 17. Use a 30 – 60 – 90 triangle to find the sine of 60°. O 2/3 3 1 2 O v3 2

A:

Q: Find the sine and cosine of the acute angles in the right triangle.

A: The measure of one angle = 90° in a right triangle.Also in a triangle, the sum of measures of all…

Q: Use words to describe the formula for the cosine of the difference of two angles.

A: We know that formula of cosine of the difference of two angle is, cosA-B=cosAcosB+sinAsinB

Q: What do you know? 6. Given AABC with 2C = 60°, a = 8, and b = 5 %3D

A: Given : <C = 60 degree a = 8, and b = 5.

Fundamentals of Trigonometric Identities

Trigonometric Identities are the equalities that involve trigonometry functions and hold for all the values of variables given in the equation.