Indicate the quadrant e where e belongs to satisfy the following conditions: + sin/csc all + + tan/cot + cos/sec Ex: sin e > 0 and cos 0 < 0 ---> Quadrant 2 1. Cos 0 > 0 and sin 0 > 0 2. Sec e > 0 and csc 0 < 0 3. Cos 0 > 0 and cot 0 < 0 4. Cos > 0 and tan 0 > 0

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A: Follow the procedure given below.

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A: topic - double derivative of a function

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A: tan θ =43sec2θ -tan2θ =1sec2θ=1+tan2θsec2θ =1+432sec2θ=259sec θ =-53      π&lt;θ&lt;3π2cos θ =-35

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A: Since 315° lies in IV quadrant.

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A: Given query is to pove the identity.

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A: We will use the criteria for congruence  of triangles.

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A: To prove:- cos(4x)=8cos4(x)-8 cos2(x)+1

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A: The roots of a polynomial are the points at which the graph of the polynomial touch the x axis.

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A: This question can be solved by applying the concept of trigonometric function.

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A: topic - inverse trigonometric functions

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A: Given; ED=40, EF=9 ,find SinD.

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