Explain how to solve (MORE THAN ONE OPTIONS ARE CORRECT) : - English - Adjectives

Question

Explain how to solve (MORE THAN ONE OPTIONS ARE CORRECT) :

Chirag Manchanda · Accepted Answer

Dear Student,∠A, ∠B, ∠C forms an increasing A
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Let the measure of ∠A, ∠B, ∠C be a - d, a, a + d  We know that sum of the measure of angles of triangle is 180°  ⇒ a - d + a + a + d = 180°  ⇒ 3a = 180°  ⇒ a = 180°/3 = 60°  ⇒ ∠B = 60° ∠A=30, ∠B=60, ∠C=90Given,acsin2C +casin2AWe know for right angle at C ,  ac =sinA⇒sinAsin2C +  cosecAsin2A=12
 sin180 + 2
sin60=0 + 3=3         Option (D)Regards