The picture shows angles A and B. Explain why sin(B) = -sin(A) and why cos(B) = -cos(A).

Q: Verify the identity : 1-cosx sinx = 2 csc x sinx 1– COsx 2.

A: Given- 1-cosxsinx+sinx1-cosx=2cscx To verify- The above identity. Identity Used- sin2x=1-cos2x

Q: what does cos sine mean

A: the ratio of the length of the side next to an acute angle to the length of the longest side (the…

Q: Evaluate sin r e de. cos

A:

Q: How do you decide whether to use a positive or negative sign in the half-angle formula for sine and…

A: Solving the following problem

Q: Simplify sin2 θ + tan2 θ + cos2 θ. Using fundamental identities.

A:

Q: Use a reference angle to find the exact value of cos 210 degree        -1/2

A: Let the given cosing angle be y - y = cos210Angle 210° lies in the third quadrant.So, we can take…

Q: Show that cos (90 degree - A) = sin A.

A: The given identity is cos90∘ -A=sinA.

Q: What is the exact value of Cos COS?

A: We have given to find exact value  cosπ3 =12

Q: sketch r=2 Sim (Q-Ę) Cos co-E)

A: First simplify the function v=2sinθ-π4cosθ-π4 . Use the formula :2sinθcosθ=sin2θ to simplify .…

Q: Cos (anc tan $3 tancsin)

A: Solution: Given data, cos(arctan(√3)+arcsin(1/2))

Q: What does the amplitude of a sine or cosine function measure?

A: To describe what does the amplitude of a sine or cosine function measure.

Q: Show that cos theta + tan theta = sec theta cosec theta

A: In the question, there is some mistake We can show that cot theta + tan theta = sec theta cosec…

Q: If tan 0+ tan'0=1, then Find the value of cos*0 + cos 0

A: