QUESTION 1 Prove the following trigonometric identities

QUESTION 1
Prove the following trigonometric identities:QUESTION 2
Solve the following :
.
QUESTION 3
Given an ellipse.
Write the standard form of the ellipse .
Determine the x- and y- intercepts.
Obtain the foci and vertices.
QUESTION 4
a) Differentiate with respect to
b) Let. i) Determine. ii) Obtain the value of .
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