Question

tomorrow is my exam so pls tell fast
explain properly
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Answer 1

Answer:

(i) x is 45°

(ii) A is 45°

(iii)Ф is 45°

(iv) x and y are equal to multiples of 45° and each other

Step-by-step explanation:

(i) x is acute i.e. x<90°.

for acute angles, only sin45 = cos45,

so x is 45.

(ii) sec A=

$\frac{1}{cosA}$

and cosec A = $\frac{1}{sinA}$

==> simplify to cosA=sinA.

Same explanation as (i).

(iii) cotФ = 1/tanФ.

tan45=1

cot45=1/1=1

==>tan45=cot45

and Ф<=90.

Ф is 45.

(iv) Same as (i).