if cos a + b is equal to zero and Sin A minus b is equal to 1 by 2 find the value of a and b
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Answer:
a = 60
b = 30
Step-by-step explanation:
cos a + b = 0
cos 90 = 0
a + b = 90 ---------(1)
sin a - b = 1/2
sin 30 = 1/2
a - b = 30 -----------(2)
solving 1 and 2
a = 60
b = 30
hitesh964:
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