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If sin 2A=cos(A+15^@) where 2A<90^@, fin...

If `sin 2A=cos(A+15^@)` where `2A<90^@`, find the value of A.

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  12. If sec5theta=cosec(theta-36^@) where theta is an acute angle, then fin...

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  14. If sin 2A=cos(A+15^@) where 2A<90^@, find the value of A.

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  15. If sin(3x+10)=cos(x+24) then find the value of x.

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