Math, asked by alphaminz74, 5 months ago

if sec 2a =cosec (a-30°),0°>2a<90°, then find the value of a.

Answers

Answered by faizuddinsupport

3

Answer:

40

Step-by-step explanation:

given:- 0°<2a<90°

we have,

sec2a=cosec(a-30°)

sec2a=sec[90-(a-30)]

sec2a=sec[120-a]

2a=120-a

2a+a=120

3a=120

a=120/3

a=40

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