Find the wrong number in the given number series.

What is the simplified value of the given expression?

3(sin² 30° + sin² 60°) + 6sin 45° - (3sec 60° + cot 45°)

If sin(x-y) = 1  and cos(x+y) = 1 /√2  then what is measure of angle x.

Find the maximum value of (20sin A + 15cos A).

If sec x + tan x = 11 then find secx?

If sec A + tan A = 3 and sec A - tan A = (1/3), find the value of cos A.

If √3 tan 2θ – 3 = 0, then find the value of tanθ secθ – cosθ where 0 < θ < 90°

Find the value of sin 240 ^°

sin² 7 ° + sin² 8 ° + sin² 9 ° + sin² 10 ° + ……… + sin² 83 ° = ?

If sec²x + csc²x = 10, find the value of tan²x + cot²x.